BEIJING, Sanya, September 3 (Reporter Wang Xiaobin, Li Yufan) This round of epidemic in Sanya has entered the final stage. On September 3, more than 1,000 medical staff from Shanghai Aid Qiong Medical Team flew back.

　　Shanghai Aid Qiong Medical Team consists of 1007 medical staff from 25 medical institutions in Shanghai, and it is organized into two teams to take over the third and fourth cabin hospitals in Sanya.

　　The Third and Fourth Compartment Hospitals in Sanya City closed their cabins as of the 2nd, with a total of 3,470 patients admitted and 2,760 discharged. Among them, the third-party cabin hospital, which is in charge of the first batch of medical teams in Shanghai, admitted 2196 infected people (the oldest is 95 years old and the youngest is 8 months), and the fourth-party cabin hospital, which is in charge of the second batch of medical teams in Shanghai, admitted 1274 patients (the oldest is 99 years old and the youngest is 4 months), and all the patients were discharged (transferred).

　　Zheng Junhua, the leader of the First Medical Team of Shanghai Aid Qionghai, introduced that the Shanghai Shelter Medical Team, with Shanghai’s anti-epidemic experience and management model, comprehensively promoted medical treatment according to the local actual situation in Sanya. Pay equal attention to the treatment of basic diseases in COVID-19, the prevention of light to heavy and the treatment of severe diseases, and the treatment of traditional Chinese and western medicine, focusing on the "one old and one small" vulnerable groups, issuing a proposal for caring for the one old and one small, and strengthening nutritional treatment.

　　On September 3rd, Shen Xiaoming, secretary of Hainan Provincial Party Committee, saw off the Shanghai medical aid team in Sanya. On behalf of Hainan Provincial Party Committee, provincial government and Hainan people, he extended high respect and heartfelt thanks to the medical aid staff.

　　Luo Dong, vice mayor of Sanya, once again expressed his respect and thanks to the selfless dedication of Shanghai Aid Qiong Medical Team at the regular press conference on the afternoon of the 3rd.

At the 2024 new york International Auto Show, people are watching the electric cars on display. Image source: Anthony Behar/Alamy

On May 14th, the U.S. government announced that it would substantially increase the tariffs on a series of products imported from China, most of which are aimed at "green" or low-carbon technology products. The tariffs will take effect on August 1st, including 100%, 25% and 50% tariffs on electric vehicles, lithium batteries and solar cells respectively. The affected categories of China goods include medical supplies, steel and aluminum products and marine cranes, and the importers will have to pay the established tax rate to the US government.

This tariff will reduce the competitiveness of related products and keep them out of the American market.

This not only marks the spread of tension between China and the United States to new areas, but also will have an impact on global energy transformation, climate diplomacy, Latin American manufacturing and trade relations, and the essence of technological development in the 21st century.

In this regard, Dialogue Earth interviewed experts from Europe, China and Latin America.

Belinda Schäpe

Independent expert and consultant on climate policy and China-EU relations in China.

Recently, the United States imposed tariffs on green technologies, marking a new stage in the Sino-US trade war, which may lead to a slower pace of energy transformation in the United States. People welcome healthy industrial competition, but the current policy of the United States may not achieve the expected results: despite the huge subsidies provided by the Inflation Reduction Act, the new tariffs will make the price of green technology in the United States more expensive, thus hindering global cooperation in tackling climate change. The EU should find its own way to deal with China’s dominant position in the field of green technology instead of shrinking on the issue of climate targets.

The EU needs to carefully strike a balance between the two goals of supply chain resilience and climate resilience. Hastily excluding China from the green technology supply chain will threaten the EU’s climate targets. In order not to affect its climate goals, the EU needs to take a pragmatic view of the threat posed by China’s green technology: although dependence on China may bring economic and strategic risks to some goods, it may not be the case for other categories. In order to ensure a smooth energy transition, it may be inevitable to rely on China to some extent in the short to medium term, especially considering China’s leading position in the international supply chain. To realize the diversification of these supply chains, it is inseparable from global partnerships, especially with developing countries around the world, which need to be supported by financial strength and innovation, rather than new tariffs.

With the escalation of tension between China and the United States, China-EU relations play an important role in maintaining the continuity of climate cooperation and diplomatic dialogue. China and the United States are about to start a confrontation in the field of green technology, which may affect global climate cooperation. If Trump is elected president of the United States for the second time, the United States may give up its climate commitment, and one of the few active working groups between China and the United States will also end. If Sino-US climate cooperation breaks down, the EU will have the responsibility to cooperate more closely with China to promote global climate action and urge China to fulfill its climate commitments. The EU should be prepared to maintain its position as a climate leader, and at the same time be cautious in dealing with trade tensions.

Yao Zhe (Yao Zhe)

Global Policy Advisor, Greenpeace East Asia Branch

On the occasion of the US election, President Biden’s decision to escalate the Sino-US trade dispute on green products is a risky bet. Being tough with China may win some voters’ votes and gain short-term political benefits, but it will also lose China’s trust in climate cooperation. China is expected to take countermeasures against the new tariffs, but the Sino-US climate dialogue will continue. However, if the green trade dispute continues to escalate, it may hinder the two countries from reaching any substantive climate cooperation action.

The China-US Climate Dialogue now has a new leader. John Podesta, the top climate diplomat in the United States, is also responsible for implementing the Inflation Reduction Act. His dual identity will inevitably bring closer the relationship between trade and climate dialogue, which will bring a severe test to the resilience of bilateral climate cooperation.

Climate is a special link to stabilize relations between the two countries in difficult times. However, the recent actions of the United States, including putting pressure on China with "overcapacity" and sharply increasing tariffs on electric vehicles and solar cells in China, have all released contradictory signals.

Competition may be the keynote of Sino-US relations for a long time to come. But that doesn’t mean that the two countries must be tit for tat in every aspect. On climate issues, even in green industries, the two countries still have good reasons to cooperate closely.

China enterprises are looking for opportunities to establish joint ventures and production centers in overseas markets, including the United States. This will help create jobs for the local area and promote economic growth. If Chinese and American enterprises are willing to cooperate, politics should not be an obstacle.

David Tyfield

Professor of Sustainable Transformation and Political Economy, Lancaster University

The new tariffs imposed by the United States on China’s electric vehicles show that more and more influential voices in the United States realize that the importance of electric vehicles is far more than a minor upgrade of long-standing automobile technology.

At present, we stand at the starting point of the social and technological evolution of electric vehicles. In the digital age, they are more and more likely to become "supercomputers on wheels". Therefore, electric vehicles are not only the core of the key travel industry and geopolitical competition in the 21st century, but also the key technology to shape the urban life style and the "good" vision in the future, which will further affect the global order and power.

In view of the fundamental mismatch between the current and emerging superpowers in terms of global outlook, it is not surprising that we see the competition around electric vehicles escalating and gradually moving towards "strategic decoupling". This kind of competition will not only involve the future form of electric vehicles, but also shape the future world in turn.

In the "Global Electric Vehicle Competition", the firm participation of the United States is welcome-not because of the speed of electric vehicle promotion, nor because American innovation is "better" in a sense, but because it has at least established a meaningful competition platform for the quality of electric vehicles. It also ensures the development track of this key technology, and will not only meet the needs of China by default.

However, this protectionist strategy risks being defeated by themselves. This is inevitable, and what is currently on the table is not the "best situation" of Sino-US cooperation-that is, a win-win strategy with the lowest risk.

Therefore, how this latest initiative affects the transformation of global sustainable travel depends on its complex details in the medium term. As the United States and China offer increasingly different and directly competitive electric vehicle visions, other countries (both of which need their markets) may balance them, thus producing positive global results. However, the opposite result may also occur, that is, due to the intensification of geopolitical division, the cycle of distrust slows down the popularization of electric vehicles and has a negative impact on this technology.

In a word, this tariff means that we have entered a new era. In this era of intensified global competition, it is possible to accelerate or slow down the popularization of electric vehicles; Only one thing is certain, that is, the electric vehicle industry will be more turbulent.

Jorge Heine

Professor, Pardee School of Global Studies, Boston University, and temporary director, Pardee Center for the Study of the Long-Range Future, Boston University.

This move by the United States may open the prelude to a large-scale escalation of the Sino-US trade war, and all countries in the region should be vigilant about this. Presidential candidate Trump has announced that if elected, he will impose a 10% tariff on all goods imported from the United States and a 60% tariff on goods imported from China.

Since the 1990s, Latin American countries, including Chile, Colombia, Peru and Uruguay, have been betting on increasing exports and promoting economic growth through free trade and access to the markets of China and the United States (the total economic output of the two countries accounts for 40% of the global GDP). They also bet on the right thing.

Now, the signal from Washington is that the era of globalization and open market is over. Protectionism prevails. In addition to electric vehicles, the United States also pointed its finger at other green renewable energy products such as batteries and solar panels. Latin America has many key commodities such as copper and lithium needed for green transformation. Therefore, these practices of the United States are particularly worrying for this region.

For many Latin American countries, it is the best choice to make use of these key commodities and increase their value, so as to realize the transformation of green economy, and to stimulate economic growth after another "lost decade". Latin American countries are eager to cooperate with China and the United States to promote the realization of this vision by developing tripartite relations-just as countries in this region did at the peak of commodity demand.

However, the signal from Washington is that this method is no longer feasible. The United States now completely gives priority to the domestic market, even if climate change and regional green transformation will be affected by it.

Enrique Dussel (Enrique Dussel)

Coordinator of China-Mexico Research Center, National Autonomous University, Mexico

In the past few years, we have experienced conflicts between China and the United States. Many people are talking about "near-shoring", "on-shoring" and "offshore". I want to add the term "security-shoring" to this dialogue, that is, to put the national security of the United States above trade and have a direct impact on third-party countries.

Recently, the United States hopes that third countries must adopt the same regulatory rules for China, that is, the "invest compete align" strategy adopted by the United States against China. "Collaboration" will affect third-party countries, because the United States is seeking third-party partners to fight against China with it; The United States hopes that Mexico can be consistent with the US security outsourcing strategy in all fields.

In terms of elections, Biden and Trump both agree with this, so the current competition between the two sides is who is tougher on China.

If you want to find a person with ambition, desire and ability to create a utopia on this planet, elon musk, the Iron Man of Silicon Valley, is undoubtedly the first choice.

This technology madman has brought cutting-edge technology projects such as Tesla and SpaceX into reality, so he is extremely rich. Now his new battlefield is social network: the privatization proposal that the world’s richest man spent more than 40 billion US dollars to acquire Twitter has been approved by the company’s board of directors. Musk said in the acquisition announcement that freedom of speech is the foundation of democracy, and Twitter is a digital town square where people discuss issues that are crucial to the future of mankind. Twitter has great potential-I look forward to unlocking it with the company and the user community.

Aside from political and financial conspiracy theories, many blockchain practitioners believe that Musk’s privatization of Twitter may become a change.A utopian experiment to set things right and return to the right development path of centralization.

Taking this as a starting point, a more free and democratic Web3 version of the online speech platform (protocol) will be established. This is exactly what Jack Dorsey, the former CEO of Twitter, has been trying to promote but failed repeatedly-he only owns more than 2% of the shares and has no voting control.

In this fairy tale with a clear distinction between good and evil, Dorsey is a frustrated idealist, the board of directors of Twitter is undoubtedly the spokesman of greedy capitalists on Wall Street, and Musk is a white knight who saves people from fire and water. Even Dorsey himself publicly stated that "taking it back from Wall Street is the right first step. 」In another version of the story, an oligarch grabs the world’s largest speech tool, and the danger behind it is obvious.

Reality is far more complicated than story. But no matter what kind of narrative, the importance of Twitter to the next generation Internet (Web3) is self-evident: not only because it is the largest and most controversial speech square, but also because it has the decentralized gene since its inception.

"Just created my Twitter. On March 21st, 2006, at 11: 50am, Dorsey posted the first official tweet in their oversimplified office. At this time, there were many strange things around the early employees in the office: hackers, anti-government, caravan vagrants …

The main founders are also full of free and loose colors. evan williams created the new concept of Blogger (he contributed a lot to the popularity of Blog) and devoted himself to promoting computers so that anyone can have his own newspaper; Jack Dorsey was wearing a blue explosive head and a nose ring. He had previously proved his ability by invading a company’s system to get a job. Biz Stone, on the other hand, gave up millions of dollars in salary and stock at Google in exchange for a "freer" entrepreneurial life. He is also an extreme animal lover. He once made the biggest fire in his career in order to prevent his colleagues from killing rats.

As you can imagine, Twitter’s management in this atmosphere was chaotic and disorderly in the early days. After that, it did not usher in explosive growth, and another "new creature" Facebook was the darling of the Web2 era:

By January 2006, less than two years after Facebook was founded, its users had exceeded 6 million. Viacom, an American media giant, offered $750 million to buy Facebook, while Yahoo offered $900 million.

Twitter is stuck with a seemingly simple question: how to explain itself to people.

Everyone has a different answer: "It is a network lacking sociality. ""It replaced text messages. ""It’s a new email. ""It’s a micro blog. "It is used to update your status. 」

Even though several founders didn’t figure out how to answer this question, Dorsey and Evan still disagree. Dorsey thinks Twitter is a place to tell others "what I’m doing", while Evan thinks Twitter’s role should be a way to share news, not status: Twitter is an information transmission network, not a social network.

Until mid-June 2007, when the number of Twitter users had exceeded 1 million and the first acquisition intention was ushered in, the above problems were still unresolved. Investors and news media are trying to interpret Twitter in their eyes, and even Yahoo, the acquirer, is quite confused about this. In Brickhouse, Yahoo’s business incubator, after a series of greetings and introductions, Bradley Horowitz, the person in charge at that time, couldn’t help asking the young entrepreneurs on the other side of the desk: "So, it is a social network? 」

This time, Dorsey broke the silence. "I think Twitter is a public utility," he said. "It’s an Internet broadcasting system. Then, he began to describe his vision for Twitter and pointed out that its status is equivalent to electricity.

It is conceivable that Bradley looked puzzled when he heard these answers, especially the idea that social media companies are a public utility. After the meeting, Bradley said goodbye to the founders one by one and told Evan, "We’ll be in touch."

Yahoo didn’t pay for this set of rhetoric. Soon after, they expressed their willingness to pay $12 million for Twitter-far below the expectations of Dorsey and others-and told Twitter that Yahoo could easily master the technology needed to set up Twitter because it was only "a simple messaging service" and "a few engineers could complete it within a week. If Twitter is not sold, then Yahoo will plan to build and release a competitive product.

There is no doubt that the three founders of Twitter rejected Yahoo’s proposal. In their view, this ironic acquisition did not undermine the confidence of the company, but promoted the team spirit. At least at that moment, "Twitter is nothing" had a consistent answer:

It is not a "message service" that Web1 bosses can take in at will, and it is also far from the classic case of "social network" Facebook in the Web2 era-for example, the tendency of decentralization defines itself as an Internet broadcasting system, and everyone can speak; For example, the original intention of opening up, greatly opening up various API interfaces, developers can call the data on the platform at will (Fred Wilson, one of Twitter investors, even thinks this is a problem); Compared with its background of emphasizing freedom and publicity.

It can be said that the above genes of Twitter almost perfectly coincide with the core requirement of the Web3 era-giving users the right to control their own data. Unfortunately, the word Web3 was not put forward by Gavin Wood (Gavin Woods), co-founder of Ethereum, until 2014.

Next, these genes that are unique to the times will influence the development direction of Twitter for many years to come, and also make it pay the price.

As time went on, Twitter began to attract enthusiastic investors. In early May 2008, the company’s valuation soared to 60 million dollars, and then it increased to 70 million dollars in the following days. Finally, when the news finally spread, the company’s worth had reached 80 million.

At the same time, chaos also spread within the company: after months of painful pulling and quarreling, Dorsey, who had been CEO of Twitter for less than seven months, was considered to have limited management ability, and was ousted by his former friend, major shareholder, co-founder Evan (holding 70% of the company’s shares) and investors. Evan personally served as CEO. Although Dorsey didn’t leave the company, he became an "invisible man" with no real power on the board of directors and a mascot who cooperated with the company’s good image in front of the media, although he didn’t want to cooperate with such a role.

Desperate and angry, Dorsey almost jumped to his arch-rival, Facebook, but finally he found what he really wanted: he co-founded Squirrel, a payment tool, with his old friend Jim Mckelvey, and later renamed it Square. At the same time, he also has a sideline-waiting for the opportunity to take revenge on Evan and the board of directors.

The line of sight goes back to Evan, the new CEO of Twitter. On February 13th, 2009, Evan took over Twitter completely. Although the company still has less than 30 full-time employees (some freelancers), Twitter is still developing rapidly, with more and more celebrities joining, and the number of users has increased by 900% within one year. In addition to the operational pressure brought by a large number of users, Evan has to deal with round after round of takeover offers.

These include technology giant Google Microsoft, famous artists, billionaires, celebrities, and even presidential candidate Al Gore. Of course, the most important opponent is Zuckerberg, who runs Facebook. In June 2010, Zuckerberg met with Twitter CEO Evan and others at his home, and once again made an invitation to buy. Twitter still chose to refuse and made clear the difference:

"People log on to Facebook to browse other people’s personal homepages, which accounts for most of the traffic on the website. News supply and information flow are only used as a springboard to browse other people’s personal homepages.Twitter has exactly the opposite experience. Information flow and news account for 90% of the traffic on the website, while the personal homepage only accounts for 10%.

In Nick Billton’s book "Incubating Twitter: A Wild Journey from Wild to IPO", the difference between Twitter and Facebook is not only the difference between social platforms and information networks (showing their personal satisfaction VS information transparency and freedom), but also they have very different moral standards:

"When Evan founded Blogger ten years ago, he established a firm belief in providing blog services. At that time, the goal of Twitter was already established: to provide people with a microphone and let them speak their minds … In the past, when government officials knocked on the door of Twitter for various reasons and asked for user information, the managers of Twitter support team would refuse," Without a search warrant, I can’t. Such an attitude has become a firm belief of Twitter for many years. Like DNA, it makes it a different kind of company in Silicon Valley.

Twitter finally resisted the court’s order to extract Twitter released by protesters in the Occupy Wall Street movement. Twitter also bravely faced the political persecution of WikiLeaks online supporters by the judicial department.

Completely different from Facebook, Twitter finally allows users to choose not to be tracked while using the service. Facebook, on the other hand, takes a completely different approach to free speech and tracking, which usually infringes on people’s privacy, and sometimes even deletes content that violates strict terms of service. Twitter is as open as a public swimming pool. 」

Contrary to the rapid expansion of every aspect of the company, the number of employees in the company is growing slowly, and the business income is still zero. Although he tried some methods, such as cutting costs and establishing close relationships with important partners, Evan still suffered the same treatment as Dorsey: the board of directors and early investors began to question whether Evan could lead Twitter to a new stage, and finally decided to oust him from the CEO position.

Nick Billton revealed in his book that Dorsey played a disgraceful role in this process, just as he thought he had been stabbed in the back by his friend, and he also betrayed his friend. It was he who actively contacted and lobbied important members of the board of directors, and finally got revenge by kicking Evan out of Twitter.

However, Dorsey did not immediately enjoy the sweetness brought by revenge, and it was still a long five years before he got his former CEO position again.

Let’s fast-forward to July 2015. When Dorsey took over as interim CEO from Dick Costolo, Twitter’s share price rose. People are expecting another story of Jobs returning to Apple to turn the tide, but at this time, the face of Twitter has changed a lot from five years ago.

In November 2013, Twitter was listed on the New York Stock Exchange and officially became a listed company. The management team’s control over the company was significantly weakened, and shareholders’ requirements for Twitter’s development speed and performance requirements were more urgent.

From 2010 to 2015, despite the stumbling, Twitter has changed from no revenue channel at all to creating revenue through advertising. To this end, the company continuously tightened the previous open API policy, banned third-party clients UberTwitter and Twidroyd in 2011, and banned the development interface of user data for third-party application developers in 2014, strictly restricting the tokens used for login. This incident upset Dorsey. At the end of 2021, he even tweeted that "this is the worst thing we have ever done", and argued that he was "not running the company at that time" and said that "the company has been trying to reopen it completely. 」

All the above behaviors have seriously damaged Twitter’s consistently open genes and public image, and at the same time, it has also attracted many criticisms, making Costello waver and limp on the balance beam of not annoying users and selling more advertisements. Not only are the growth of active users worrying, but the commercial income has never met the expectations of investors.

On the other hand, Facebook has no moral burden in extracting user data to expand the scale of advertising. In 2015, the scale of advertising realization exceeded $17 billion. At that time, a company had to do mobile advertising, and Twitter would only be considered after Facebook, Facebook Messenger, Instagram and Snapchat.

There are two problems in front of Dorsey. First, the activity brought by the worsening community environment is declining, and the platform is full of lies, violence, political manipulation and zombie accounts; The second is to give back to shareholders’ demand for making money and find a stable growth business income model. He also has a deep understanding of this: "We must carry out a very difficult restructuring of this company. 」

One of the key points of the reorganization is the healthy reform of the Twitter community and the rectification of extreme speech network violence. In the last quarter of 2017, Twitter cleared 58 million accounts within three months. By 2018, the number of accounts closed in May and June alone exceeded 70 million. Twitter under Dorset often plays the role of a platform to defend the bottom line of freedom of speech, but it always has two sides: when they act actively, users complain that Twitter is too much in charge; When he wants to give up, the government and the law have the responsibility to ask them to intervene.

Efforts to increase advertising revenue are still trapped in the past genes: limiting API to keep users and data in its own hands can maximize commercial benefits, but it will also damage the reputation established by Twitter; Adhering to the original intention of opening up has made the commercialization process far behind the expectations of shareholders. Even Dorsey, who entered the second palace, did not find the key to solve the contradiction at that time.

Twitter is still limping. Although its advertising revenue keeps growing at the same pace, its speed has been greatly improved by Facebook, and it also faces competition from many rivals such as Instagram, Snapchat and Pinterest. Dorsey was once again caught in the infighting of Twitter investors and almost relived the nightmare that was driven away more than ten years ago.

After the storm, although Dorsey was able to stay in office, it was even more difficult to fully control Twitter.

Mike Masnick’s famous article "Protocol, Not Platform: On the Technical Methods to Realize Freedom of Speech" published on August 21st, 2019 triggered a great discussion in the American scientific and intellectual circles, and it seems that Dorsey found a new way to solve the problem-the solution of the ——Web 3 version, and returned the censorship right to the users. He not only forwarded it the first time, but also announced a few months later that he would invest to set up a related independent team.

Dorsey also mentioned in the tweet that Twitter was like a set of protocols in the early years, but later it took another road, gradually became centralized and developed into a platform.

Soon after, Dorsey set up a team called "Bluesky" within Twitter to study the technical standards of social media decentralization. Try to build an open source and decentralized community platform, and gradually try to implement decentralization on a highly centralized community platform. The leader of the Blue Sky team is the successor (resigned) after Dorsey left Twitter.

But business problems remain to be solved:The agreement does not make money, how to maintain the company’s income? We don’t know what Dorsey really thinks, but in reality, cryptocurrency with decentralized agreement has become a possible path.So you can see that in his last few years as CEO, Dorsey almost aggressively launched a series of measures to benefit Web3 and cryptocurrency on Twitter:

He launched Twitter Space, allowing a large number of Web3 practitioners to communicate online in this space; He was also the first to launch an NFT product released by the Internet giant, so that Twitter users’ avatars can be displayed as NFT and certified; It also supports all people in the encryption circle to have a Twitter account, and every encryption project will register an account on Twitter and post a link in it. ……

Dorsey himself has become one of the most important advocates of Bitcoin. He not only praised Bitcoin as the future of cryptocurrency many times in public, but also actively promoted the integration of lightning network, set up a Bitcoin DeFi developer platform, built a Bitcoin cold wallet and built a legal currency version of Bitcoin decentralized exchange, which showed Dorsey’s yearning for a decentralized world.

Suji Yan, founder of Mask Network, is a senior entrepreneur in the field of Web3 and cryptocurrency, and one of the few early members of Bluesky.According to his close observation, Dorsey was under unprecedented internal pressure, and almost predicted that his time as CEO was running out, so that he did not hesitate to "do something big" before leaving his job. 」

In the last period of Twitter, Dorsey simply used Twitter to do a series of decentralization experiments. After he left Twitter last year, as the helm of the US version of Alipay "Square", he directly changed his name to "Block" and made it fully Web3-based. Recently, he sent a message to "repent" that Twitter violated its original intention and led to the centralization of the Internet, and he felt guilty. Until the acquisition of Twitter by Musk, Dorsey was one of the most active people, and even called him the "only trust solution" to solve the Twitter problem.

Although Musk has not mentioned how to transform Twitter, it can be seen from his previous remarks that he is interested in adding cryptocurrency payment to Twitter and binding cryptocurrency with Twitter’s advertising business. Sam Bankman-fried, CEO of FTX, a cryptocurrency exchange, gave Musk some suggestions on "Web 3 transformation" on Twitter, including chain encryption of tweets, monetization of tweets and charging for each tweet, and advertising on the user interface. Brian Armstrong, CEO of Coinbase, another exchange, thinks that Twitter is expected to become a distributed protocol over time-this is consistent with Dorsey’s original idea of Twitter, and there are rumors that Dorsey will return.

The past of Twitter decentralization has come to an end here, and the next road to Web3 will be completed under the strong influence of Musk. Whether he is an angel or a devil, a brand-new Twitter will appear soon. I hope it can fly in the sky like a free North American mountain bluebird, like its Logo that has been used since 2012, instead of being kept in an iron cage by oligarchs.

Nick Billton, Incubating Twitter: A Wild Journey from Wild to IPO.

This article comes from WeChat official account Geek Park (ID: geekpark) on WeChat. Author: Matt, editor: Jingyu, published by 36Kr with authorization.

According to the news of Yunnan Court Network, on September 20, 2022, the Higher People’s Court of Yunnan Province publicly pronounced the cases of intentional homicide of appellants Hong Jiao, Zhang Chenguang and Cao Zeqing, theft of appellant Hong Jiao and defendant Qi Wenqiang in the original trial, and ruled that the appeal was dismissed and the original judgment was upheld.

On July 7, 2022, the Intermediate People’s Court of Xishuangbanna Dai Autonomous Prefecture made a first-instance judgment, and sentenced the defendant Hong Qiao to death for intentional homicide, deprived of political rights for life, sentenced him to two years and six months in prison for theft, and fined him 10,000 yuan. He decided to execute the death penalty, deprived of political rights for life, and fined him 10,000 yuan. The defendants Zhang Chenguang and Cao Zeqing were sentenced to death for intentional homicide, suspended for two years and deprived of political rights for life; The defendant Qi Wenqiang was sentenced to two years in prison for theft and fined RMB 8,000. Li Sheng and Chen Shouping, plaintiffs in incidental civil action, were allowed to withdraw the lawsuit. After the verdict, Hong Jiao, Zhang Chenguang and Cao Zeqing refused to accept it and appealed. The Higher People’s Court of Yunnan Province accepted the case on July 20, and formed a collegiate bench according to law, and held a public hearing on August 26.

The second instance of Yunnan Higher People’s Court found that in early July 2020, the appellant Hong Qiao had a conflict with his girlfriend Li Mouyue (the victim, who died at the age of 21), so he invited the appellants Zhang Chenguang and Cao Zeqing to help kill Li Mouyue and make a crime plan. Hong Qiao designed in advance to trick Li into buying a plane ticket from Nanjing, Jiangsu Province to Jinghong City, Yunnan Province on July 9, and provided funds and some tools for committing crimes. He led Zhang Chenguang and Cao Zeqing to rehearse the killing methods many times and explained the details of the crime and the requirements of regular reporting, and instructed Zhang Chenguang and Cao Zeqing to fly from Nanjing to Jinghong City in advance to the agreed location of the crime, Pu ‘er Tea Park in Menghai County, and to buy shovels to dig holes in advance. At about 21 o’clock that day, Li Mouyue was lured to the crime site, and Cao Zeqing and Zhang Chenguang killed and buried Li Mouyue.

In May 2019, the appellant Hong Jiao instructed Qi Wenqiang, the defendant in the original trial, to steal a monocular night vision device (worth 18,000 yuan) in a resort in Nanjing.

The Higher People’s Court of Yunnan Province held that the appellants Hong Jiao, Zhang Chenguang and Cao Zeqing deliberately and illegally deprived others of their lives, and their actions all constituted the crime of intentional homicide. Hong Jiao and Qi Wenqiang, the defendant in the original trial, secretly stole a large amount of other people’s property for the purpose of illegal possession, and their actions both constituted theft. Hong Qiao is guilty of intentional homicide and theft, and should be punished for several crimes. In the joint crime of intentional homicide, Hong Jiao was the perpetrator of the crime, and carried out specific organization and command actions, provided corresponding funds and some tools for committing crimes, designed to lure the victim Li Mouyue to the crime site, and provided Li Mouyue’s itinerary information, with the most prominent guilt; Zhang Chenguang, Cao Zeqing and Hong Qiao conspired to commit murder, which together led to Li’s death, with equal guilt, and all three were the principal offenders. Hong Jiao ignored other people’s lives, committed a cruel crime, was extremely harmful to society, and committed a very serious crime. Moreover, he retracted his confession and denied that he had instructed the killing of Li Mouyue, and he had no remorse and should be punished according to law. Zhang Chenguang and Cao Zeqing’s culpability in the joint crime is less than that of Hong Qiao’s, and they have frank circumstances. It is in line with the principle of adapting the culpability and punishment to the death penalty. The judgment of first instance found that the facts were clear, the evidence was true and sufficient, the conviction was accurate and the sentence was appropriate. The trial procedure is legal. Therefore, the aforementioned ruling was made.

During the trial of the Higher People’s Court of Yunnan Province, the litigation rights of all litigants were guaranteed according to law. Close relatives of the parties, some deputies to the National People’s Congress, CPPCC members, media reporters and representatives of the masses attended the trial and pronounced the verdict.

　　CCTV News:According to "China Water Conservancy" WeChat WeChat official account news, since September 22nd, influenced by the autumn rain in West China, there has been a continuous and strong rainfall process in the Hanjiang River Basin, with a cumulative area rainfall of 112mm, including 123mm above Danjiangkou Reservoir, and the rivers in the upper reaches of the Hanjiang River, such as Bahe River, Renhe River, Huangyanghe River and Blocked River, have successively experienced super-warning floods. At 20: 00 on September 29th, the No.1 flood in 2023 occurred in Hanjiang River. At 4 o’clock on September 30th, Danjiangkou Reservoir showed the maximum inflow of 16,400 cubic meters per second this year, corresponding outflow of 9,190 cubic meters per second, reservoir water level of 167.81 meters at 14 o’clock on October 2nd, inflow of 11,800 cubic meters per second and outflow of 8,170 cubic meters per second.

　　It is estimated that October 2— On the 5th, there will still be moderate to heavy rain in the Hanjiang River Basin, and there will be heavy rain in some areas, and the accumulated area rainfall will be 30 mm to 60 mm.. On October 6th, Danjiangkou Reservoir will have another inflow peak flow of about 15,000 cubic meters per second. The Huangzhuang-Hanchuan section of the middle and lower reaches of the Hanjiang River will exceed the police one after another on the 2nd, with the maximum exceeding range of 0.3m-0.5m, but it will be lower than the guaranteed water level.

　　The Ministry of Water Resources attaches great importance to the autumn flood prevention work of the Han River. Li Guoying, deputy commander of the National Defense General and Minister of Water Resources, requires a high degree of vigilance against the autumn flood, close monitoring of changes in rain, water and flood conditions, detailed implementation of various defense measures, and firm adherence to the safety bottom line of flood and drought disaster prevention. The Ministry of Water Resources insisted on daily rolling consultation and deployment, started the Class IV emergency response for flood prevention in the Hanjiang River, guided the Yangtze River Water Resources Commission to do a good job in dispatching Hanjiang Reservoir Groups such as Danjiangkou, Ankang and Pankou, and sent three expert groups and working groups to Hubei and Shaanxi provinces to guide the storm flood prevention and inspection of Danjiangkou Reservoir Area. Every day, in the form of "one province and one order", we urge and remind local governments to do a good job in monitoring and early warning, water project scheduling, inspection and defense. The Yangtze River Water Conservancy Commission has successively issued blue warning for flood in the upper reaches of the Han River and yellow warning for flood in the middle and lower reaches, and adopted the methods of forecasting, pre-discharge and grading compensation to dispatch controlled reservoirs in the Han River basin, such as Danjiangkou, to intercept flood and cut off peaks, with a total flood storage capacity of 1.16 billion cubic meters, reducing the water level of main control stations in the middle and lower reaches of the Han River by 1-1.5 meters, of which seven dispatching orders have been issued continuously since September 27, dispatching Danjiangkou Reservoir with a flood storage capacity of 784 million cubic meters, with a peak cutting rate exceeding 40%, which is powerful

　　Hubei and Shaanxi provinces do their best to prevent floods in the Han River. The main responsible comrades of the Hubei Provincial Party Committee and the provincial government made arrangements for the autumn flood prevention work of the Hanjiang River, demanding that the flood control responsibility system be effectively implemented, especially the top leaders of the party and government should take the flood control work in their hands and personally grasp it. Hubei Provincial Department of Water Resources has repeatedly connected cities, counties and engineering management units along the Hanjiang River in the autumn flood season, and detailed the deployment of countermeasures; At 16: 00 on September 30th, the Class IV emergency response of flood prevention was started, and seven working groups were sent to the front line for guidance, and two expert groups and 19 experts were preset to be on standby at any time. A total of 850 people were arranged to patrol the embankment on the Hanjiang River. The Water Resources Department of Shaanxi Province started the Class IV emergency response of flood and drought disaster prevention in the whole province at 13: 00 on September 18th, and held a video conference of the whole province on September 28th to arrange the deployment of flood prevention work, and randomly checked the performance of the "three responsible persons" of not less than 10 reservoirs and 45 warping dams on the job every day, strengthened the patrol duty in areas prone to mountain torrents, and implemented the "Call for Response — Feedback "mechanism. At present, there are no reports of danger in the two provinces.

Ada’s new work "Make a scene in Tianzhu" was released on the first day of the New Year.

　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 Video/Ren Jie Editing/Yu Chang Photography/Yang Nan Writing/Li Xiye

Special feature of 1905 film network After more than ten years of debut, Ada has gradually become a familiar host for the national audience and transformed from a host to an actor. Although he has acted in dozens of film and television works, Ada is still modest and enterprising when it comes to the identity of an actor.

In the interview, Ada said that he needed a masterpiece and an award. "I hope to be recognized by the industry so that I can announce loudly: Hey, I am an actor." At the same time, she is not in a hurry. "I won’t force myself to play a role that is particularly unlike me. I haven’t reached that skill and temperature yet."

Ada’s style is still sexy this time.

Ada said that he regarded opportunities as life. His friend Dapeng wrote in the book that when he was a newcomer, he made a program with Ada. Ada’s hard work moved him. In Pancake Man, Dapeng also used movies to let the audience see the helplessness of Ada’s efforts but being misunderstood.

In the interview, Ada revealed that he would also join Dapeng’s new film. Recently, when Dapeng announced in Weibo that the second film "Sewing Machine Band" was about to start shooting, Ada also said, "I want to go back to your 16-year-old and see that packed concert." Let people look forward to the spark of this good friend in the new movie.

　　In the 2016 academic ranking of world universities released on August 15th, there are 41 universities in China, among which Tsinghua University and Peking University are among the top 100 universities in the world for the first time this year, and 9 universities including China Geo University (Wuhan) and University of Electronic Science and Technology of China are among the top 500 universities in the world for the first time.

　　According to The Paper (www.thepaper.cn), academic ranking of world universities (ShanghaiRanking’ S academic ranking of world universities (ARWU) is the first comprehensive global university ranking in the world. It was first published by the World-class University Research Center of the Institute of Higher Education of Shanghai Jiaotong University in 2003, and it is the first comprehensive global university ranking in the world. Since 2009, ARWU has been released by Shanghai Soft Science Education Information Consulting Co., Ltd.

　　Academic ranking of world universities of Soft Science adopts internationally comparable objective indicators and third-party data, including the number of alumni and teachers who won the Nobel Prize and Fields Prize, the number of highly cited scientists, the number of papers published in Nature and Science, the number of papers included in Science Citation Index (SCIE) and Social Science Citation Index (SSCI), and the average academic performance of teachers.

　　In this year’s ranking, Harvard University is still firmly in the top spot, ranking first in the world for 14 consecutive years; Stanford University, second only to Harvard University, continues to rank second in the world. The University of California, Berkeley, surpassed MIT and ranked third in the world. Cambridge University rose from fifth place to fourth place; Oxford University jumped from 10th place last year to 7th place.

　　The University of Tokyo in Japan regained the 20th place in the world this year, making it the only university in Asia that ranks among the top 20 in the world.

　　Tsinghua University and Peking University took the lead in making a historic breakthrough and advanced into the top 100 in the world, ranking 58th and 71st respectively. Compared with last year, Zhejiang University, Shanghai Jiaotong University, Fudan University and China University of Science and Technology also made significant progress, ranking 101st-150th in the world. Harbin Institute of Technology and Xi ‘an Jiaotong University are among the top 200 universities in the world for the first time, and Sun Yat-sen University is the only mainland university in China outside C9.

　　In 2016, there were 41 mainland universities in China, which were among the top 500 universities in academic ranking of world universities, an increase of 9 compared with last year. China Geo University (Wuhan) and University of Electronic Science and Technology of China ranked among the 301st-400th in the world for the first time. Seven universities, namely China Ocean University, Hunan University, Nanjing University of Science and Technology, Northeast Normal University, Wuhan University of Technology, Donghua University and beijing university of chemical technology, all ranked among the top 500 in the world for the first time.

　　Among the universities in China, Hong Kong University ranks 101st-150th in the world, while Taiwan Province University and Taiwan Province "China University of Medicine" rank 151st-200th in the world. Hong Kong Baptist University and Kaohsiung Medical University entered the world’s top 500 for the first time this year.

　　[Gong Jueyuan, special correspondent of Global Times in Iran] Student poisoning incidents have occurred again in many places in Iran. On March 1st, 108 students from seven girls’ schools in Ardabil were rushed to hospital, and similar poisoning incidents occurred in many schools in the capital Tehran. In the past three months, student poisoning has occurred frequently in Iran. According to the statistics of the online website of Iran’s "Trust", as of March 1, there were student poisoning incidents in 58 schools in 10 provinces. Iranian parliamentarian Haidari said on the 1st that according to reliable sources, nearly 900 students across the country have been poisoned.

　　According to the Iranian National News Agency, from 10: 00 to 11: 00 a.m. on the 1st, students from many schools in Ardabil area collectively developed symptoms of throat burning, headache and nausea. According to Iran’s "Choice" news website, many female high school students in Tehran were poisoned. Parents said that the school smelled foul and it was suspected that some kind of spray was thrown into the school. The education department of Isfahan province also announced on the 2nd that a poisoning incident occurred in a local girls’ middle school on the 1st, and seven students were rushed to the hospital.

　　The poisoning incident of Iranian students has lasted for more than three months. On November 30 last year, the first poisoning incident occurred in a school in Qom, and 18 female students developed symptoms such as shortness of breath and muscle numbness. Since then, similar incidents have occurred in many girls’ schools in Qom and spread to Ardabil, Teheran, Los Restan, Kermanshah and other places.

　　Washington post said on the 1st that although some boys seem to get sick, the vast majority of poisoning cases occurred in girls’ schools. According to a report recently released by the Iranian Ministry of Health, students in Qom have mild symptoms of poisoning, and nitrogen is detected in the poison, which usually lasts for 15 to 45 minutes.

　　Because the cause of the poisoning incident and the people behind it are still under investigation, it is not clear whether there is any connection between the poisoning incidents in various places, which has caused panic and confusion in Iranian society. According to Qatar Al Jazeera, some people linked the protests that broke out in Iran with the poisoning incident, claiming that the Iranian government tried to "retaliate" the female students, while some Iranian officials believed that it might be the external "hostile forces" who poisoned the Iranian government.

　　On March 1, Iranian President Leahy appointed the Minister of the Interior to deal with the poisoning incident as soon as possible, and asked the medical and intelligence departments to cooperate with the investigation. Djarrar Zadeh, chairman of the National Security and Foreign Policy Committee of the Iranian Parliament, said on the 2nd that the investigation of the poisoning incident has been put on the urgent agenda, and the results of the investigation are — — Including foreign intervention and enemy infiltration — — Will be announced as soon as possible.

Iranian President Leahy, data map

　　Earlier, Manadi, chairman of the Education and Research Committee of the Iranian Parliament, said that the poisoning incident of Qom female students was an attempt to deliberately create riots and interfere with the education of girls in schools. The Iranian newspaper said on the 2nd that the murderer attacked the Iranian education system by poisoning students and damaged the credibility of the government under the guise of "women, life and freedom".

The fresh news morning call is all in the morning paper.

　

It will be the Spring Festival in two weeks, and the movies of the Spring Festival will come to you soon. Then, there will be more overseas movies coming to our side one after another, such as the "Sorry" series of Brother Shan Zheng, such as "Little Sister", you will know after reading the morning paper ~

It is predicted that Xú Zhēng’s "Awkward" series of new works will start "Detective Hawthorne" and then return to file 1.25.

　

　Xú Zhēng Film and Television Culture Studio released a picture with air tickets and tickets with the caption "Guess where xu teacher is going this time?" It is suspected that the new series of "Jiong" directed by Xú Zhēng will be launched soon.

There is a plane ticket from Beijing to Chiang Mai with the name Zaler Xu and the time in 2012, which was taken in Thailand, and another ticket from Shanghai to Hong Kong with the name Xu Lai, which was released on September 25th, 2015. In the middle of the picture is a ticket. The starting point is Beijing, the terminal is unknown, and the name only shows "Xu". While scanning the QR code on the ticket with a mobile phone, the page only shows "Guess?" Two words, the film side sold a lock, which triggered the audience’s infinite speculation about the third "embarrassing" series of movies. It’s for sale. I’m looking forward to it!

That’s the news of Brother Shan Zheng’s new film. The next news is that it’s "unreliable". What do you think? Yesterday, Huaxia Film Distribution Co., Ltd. issued a notice about the file change, saying that the film was "postponed due to technical problems at the request of the filmmaker", but the specific schedule was to be determined. Previously, "Love Saint 2" was originally scheduled to be released in the Spring Festival. On the 21st, it was suddenly announced that it would be released at 18: 00 on January 24th. This withdrawal will be the second time that the film has been rescheduled. At present, the film has not responded to the withdrawal. I don’t know if you feel a little distressed about Shawn like a younger sister! Some netizens said that Bai Baihe Xiaoyang was too miserable! Enmmm~ Recently, the news of changing gears and withdrawing gears is changing. Mu Meng is a little impatient!

After "Lover 2" announced its withdrawal, it announced the news of its return to the release on January 25th. Previously, when "Detective Hawthorne" announced the withdrawal of files, many netizens said that they were distressed by Han Geng. Now they are back. Can you "see" Han Geng soon? "Detective Hawthorne" is based on Cheng Xiaoqing’s "Hawthorne Detective Collection" written at the beginning of last century, directed by Xianyang Zhou and starring Han Geng, Andrew, Zhang Huiwen and Guo Xiaodong, and tells the story of detective Hawthorne solving a bizarre murder in a border city of Golden City.

Overseas telescope independent film started shooting in February and is expected to be released in 2020.

　

Suddenly hot search! The widowed sister’s independent film will start shooting next month! Recently, the highly anticipated independent film Black Widow has the latest news! According to Omega Underground, a foreign media that has broken the news of shooting, Black Widow will start shooting in Croatia and Miami on February 28th. Although the plot of the film is not officially certified, it is also reported that the film will tell "Romanova’s experiences of living in the United States for 15 years before becoming a black widow and after the collapse of the Soviet Union".

Following Captain Surprise, which was released on March 8th, Black Widow will become Marvel Comics’s second female superhero movie, and Scarlett Johansson will return to play the role of Black Widow, directed by Australian female directors of Berlin Syndrome. The film has not yet been finalized, but it is speculated that it will be released in North America in May 2020. Wait for the widowed sister! ! !

Industry broadcast, Oscar finalist film release, celebration map, five nominations, mainland booking

　　

On the evening of January 22nd, Beijing time, the nomination list for the 91st Academy Awards was officially released. Are the friends as excited as the expected girls? Among them, 10 nominations led the way, followed by 8 nominations, 7 nominations, 6 nominations and 5 nominations for Green Book. Many short-listed films posted pictures to celebrate after the list was announced, and wrote the names and numbers of their nominated awards on the posters, which was easy to understand!

However, what is most worth celebrating is that Green Book, the top seed of the Oscar for Best Picture, who won five nominations for Best Picture, Best Actor, Best Supporting Actor, Best Original Screenplay and Best Editing, will be released in the Mainland on March 1st, and everyone will have a good time! This film is adapted from a real event, and tells the story of a black pianist and a white driver who, under the guidance of the Green Book, drove to the southern part of the United States and formed a sincere friendship across races and classes during their journey. The film was released in the Mainland this time, thanks to its co-producer Alibaba Pictures. The nomination of Green Book this time also made Alibaba Pictures the first film and television internet company to jointly produce an Oscar-nominated film. If it really won the best film award, then Alibaba Pictures will be the first film and television internet company in the world to produce the best film Oscar ~

The movie Calendar was born in Shunji Iwai.

(The specific broadcast content is subject to TV)

Want to get more fresh movie information, love beans, exclusive live video, don’t hurry to download CCTV6 movie channel app, there are girls waiting for you!

　　With an unprecedented fireworks feast at the opening ceremony of the 2008 Beijing Olympic Games, Chinese conquered the world with gorgeous fireworks last night, and the audience was amazed by the wonderful fireworks shapes. Zhao Weiping, the commander-in-chief of the Olympic opening ceremony "Bird’s Nest" and the Great Wall fireworks display implementation team, was excited and talked to reporters about the unknown story behind the fireworks.

　　No paper scraps

　　How to bloom peony without gunpowder smell

　　Environmental decryption 1

　　No paper scraps

　　At 11 o’clock last night, the opening ceremony of the Olympic Games came to an end. The audience was surprised to find that there was not a scrap of paper or residue left in the fireworks display throughout the opening ceremony.

　　Zhao Weiping said that this is because a new type of environmental protection material has replaced the "paper pad pressure chamber" of traditional fireworks, thus ensuring that the fireworks can be completely decomposed and burned out at the moment of lighting.

　　Environmental decryption II

　　No smell of gunpowder

　　Last night, when the "Silver Waterfall" with a total length of more than 30 meters flowed down the bowl of the Bird’s Nest, it was as if a Milky Way was injected into the venue, and the passion quickly passed and surged in the venue. Fireworks were just around the corner, but the audience didn’t smell a pungent smell.

　　It turned out that the fireworks placed in the Bird’s Nest were not filled with gunpowder, but instead of gunpowder, compressed air was used through the technology of "Shenzhou VI Launch", and the compressed air and fireworks were ejected through electromagnetic valves.

　　Modeling decryption 1

　　How does peony bloom?

　　The first climax of the "Bird’s Nest" is to interpret the whole process of peony, the national flower, from budding to blooming, and suddenly the Bird’s Nest turns into a red ocean of peony. Zhao Weiping, chairman of the national brand Panda Fireworks Company, said that the blooming process of "Peony Blossom" took only 11 seconds, but the number of fireworks was 4,845.

　　Originally, in order to make the whole red peony cover the whole bird’s nest, the designer used computer three-dimensional special effects technology to draw a huge peony covering the roof of the "Bird’s Nest", and then selected 85 points on the roof of the "Bird’s Nest", each of which is responsible for emitting 3 petals, each of which consists of 29 fireworks, which symbolizes the 29th Olympic Games.

　　When setting off, according to the order from inside to outside, the "flower heart" is fired, and then the innermost "petal" is fired, and then it transitions to the outermost petal in turn. When the last petal is opened, 85 points are started at the same time to volley fireworks.

　　Modeling decryption 2

　　How to transfer the "Olympic rings"

　　That night, five circles of five colors, red, yellow, green, black and blue, appeared in the sky, and the five circles were connected with each other, showing the Olympic rings pattern.

　　Zhao Weiping introduced that the biggest difficulty in using fireworks to express the Olympic rings and other patterns is that it is difficult to control the initiation point and time interval of fireworks. The interval error of each fireworks cannot exceed 0.03 seconds, and the audience can see the circle and the five rings only when they are fired in series at a constant speed.

　　Modeling decryption 3

　　"Silver Waterfall"

　　How to flow into the stands

　　During the opening ceremony, there was a "silver waterfall" nearly 40 meters long, like the Milky Way, which slowly hung down along the bowl of the "Bird’s Nest" and flowed into the stadium. The "Bird’s Nest" stand immediately turned into a silver hall.

　　Zhao Weiping said that the diameter of the bowl of the "Bird’s Nest" is about 500 meters, more than 40 meters above the ground. This shape requires that the diameter of the "Silver Waterfall" should not be less than 500 meters and the length should not be less than 30 meters, so that the audience can be there.

　　Modeling decryption 4

　　How does the "dove of peace" spread its wings?

　　Careful viewers will find that a pair of snow-white wings were born on both sides of the "Bird’s Nest", flapping up and down, just like a dove spreading its wings and flying.

　　Zhao Weiping told reporters that it is not difficult for the "Bird’s Nest" to give birth to "wings". What is difficult is that the wings should be flapped up and down, showing a dove of peace spreading its wings and flying dynamically. In order to make this dove of peace "smart", the researchers first improved the discharge effect of the traditional fireworks element "white tail", which has only white light and no track left by the tail passing through the air, just like the wings of the dove of peace. In order to make the wings move, the researchers calculated the flapping frequency of the flying dove of peace, so that the "Bird’s Nest dove of peace" fluttered its wings once every second on average.

　　Modeling decryption 5

　　How does the "Red Flash Bird’s Nest" feel dynamic?

　　A red silk thread in the night sky, passing through the "Bird’s Nest", is flashing like a red neon lamp. Under its embellishment, the whole "Bird’s Nest" is flashing, running and jumping.

　　Zhao Weiping said that the first difficulty of the "Red Flash Bird’s Nest" lies in the layout. In order to cover the entire "Bird’s Nest", a launching point should be set up every five meters on each main beam; At the junction of the two main beams, a launching point is also set up every five meters, and all launching points are evenly distributed, so that the whole "Bird’s Nest" can jump in the red ocean; The second difficulty lies in the time difference control, and the fireworks at each point must be lit and extinguished at the same time.

　　Modeling decryption 6

　　How to open Tianmen

　　There was a scene in the opening ceremony: a magnificent arched gate appeared over the "Bird’s Nest". From closing the door and opening a crack to opening half and three quarters until the Golden Gate finally opens. Zhao Weiping said, "Opening the Tianmen Gate" is difficult to measure in the distance and angle between the ground and air. The distance between the first group of emission points and the angle with the horizontal plane must ensure that the emitted fireworks meet in the air and hand over an arch; The distance and horizontal angle between the second group of fireworks must ensure that when the fireworks meet in the air, there is just a gap, just like the door has just opened a gap, and so on. If the angle is a little bit biased, the process of opening the door cannot be vividly reproduced.

　　Modeling decryption 7

　　How does the countdown work?

　　9, 8, 7 … When the opening ceremony started, the first thing in the air was flashing numbers. Zhao Weiping introduced that the number nine drawn with fireworks stays in the air for no less than one second. As soon as the number nine goes out, it lights up at eight and flashes again for one second. "If the number stays even in the blink of an eye, the fireworks will not draw a countdown stopwatch.".

　　Our reporter Wang Yuwen/Zhang Fengshe J178

　　The flame is eight meters high.

　　Can resist ten winds.

　　Olympic main torch

　　Secret of combustion system

　　Last night, Xu Tong, deputy commander of the torch project for the opening ceremony of the Beijing Olympic Games and director of the dispatching center of Beijing Gas Group, revealed that the flame of the main torch of this Olympic Games was accurate to 8 meters high and 4 meters wide. The main torch can resist 10 winds and 80 mm rainstorm per hour. Because the torch is also equipped with lightning protection device, it can prevent lightning strike and can "turn off without noise"

　　The flame height is 8 meters.

　　Xu Tong said that the torch of the main Olympic venue consists of three parts, including the torch head, gas pipeline and control system. The key to determine its shape and color lies in the torch burner, which is made up of hundreds of burning holes arranged in rows, grouped and segmented into a disk shape, forming a three-dimensional shape with a height difference of 1.6 meters together, and spiraling up.

　　Due to the spiral shape of the torch, there is a height difference of 1.6 meters between the high and low burning points of the torch, which is very different from the flat disc burner of the torch in the past. Xu Tong said that in order to ensure the visual effect of the flame shape of the torch burning, the torch team cooperated with the overall structural modeling in the design to set up the gas supply cavity of the burning device in sections, grouped and combined, and controlled and adjusted the torch burning in sections, so that the flame shape was more consistent with the structure, thus concentrating the firepower to the maximum extent, making the flame shape complete and coherent, and the height reached more than 8 meters, which greatly enhanced the appreciation.

　　Rainstorm can’t be extinguished

　　In order to improve the rain resistance of the main torch

　　Yes, in the design, the researchers increased the gas supply pressure, thus increasing the outlet flow rate of the burner and improving the stability of the flame under bad weather conditions. During the rain-proof test of the burning device, the lighted torch has withstood the test of "artificial rainfall" environment created by six groups of fire-fighting high-pressure water guns, ensuring that the torch still keeps normal combustion in the rainstorm weather with rainfall of 80 mm per hour, which is higher than the rainfall requirement of 60 mm per hour of the Olympic Organizing Committee.

　　In addition, in order to meet the wind resistance requirements of the main torch proposed by the Olympic Organizing Committee, the torch design team installed a special wind protection device in the combustion system. The field simulated artificial wind tunnel test shows that the torch has the ability to resist the wind equivalent to 10 winds.

　　Gas supply double insurance

　　Xu Tong said that all the gas and electrical systems of the main torch of the Olympic Games are designed and installed in a two-way and double-insurance way, which can ensure the normal operation of the torch combustion control system. Power failure all the way will not affect the combustion of the main torch, and even the gas supply is dual-mode.

　　It is reported that in order to cooperate with the opening and closing ceremony operation center to complete the torch physical test and realize the mobile emergency gas supply for the main torch, the torch team of Beijing Gas Group organized the design of special pressure regulating equipment for the pneumatic source of large-flow vehicle-mounted compressor, and the compressed natural gas will be used as the emergency standby gas source for the main Olympic venue and other urban areas.

Editor: Zhao Deli