Editor's Note:

Chinese people believe that letters are as valuable as gold. For thousands of years, letters, across mountains and oceans, have been delivering writers' sentiments and conveyed friendship and expectations.

Xi Jinping, general secretary of the Communist Party of China (CPC) Central Committee and Chinese president, has managed to find time to reply to some letters from different parts of society and the world despite his busy work schedule.

Through his letters, Xi has corresponded with international friends from all walks of life on numerous occasions, part of a series of excellent stories of China's international exchanges in the new era. The letters have also added vivid color to the diplomacy between China and other countries.

The Global Times traced and contacted some of the recipients of Xi's letters, to hear the inspiring stories behind the letters and their communication with the president.

In this installment, Global Times reporters spoke with technicians from the Aero Engine Corporation of China (AECC) Shenyang Liming Aero-Engine Co, Ltd to learn about their stories of devoting themselves to the research and development of China's domestic aero engines and how Xi encouraged them to inherit and carry forward the spirit of a great country's craftspeople, along with a thorough review of how China gradually created its own aero engines.

"A workman must first sharpen his tools if he wants to do his work well," is a Chinese saying that emphasizes not only the importance of tools of a craft, but indicates the vital role of the craftsman who creates the tools.

"Your work is important and honorable," Chinese President Xi Jinping, who is also general secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission, told technicians at the Li Zhiqiang Class in Aero Engine Corporation of China (AECC) Shenyang Liming Aero-Engine Co Ltd, while Xi visited the corporation in 2013 to review its work in developing and producing aero engines.

A decade later, in a letter to the class on September 1, Xi spokes highly of the contribution of technicians in the research and development process of China's aero engines.

Xi emphasized that aero engines are a vital national asset and an important reflection of the country's scientific and technological strength and innovation capabilities. "I hope you will remember your mission and responsibilities, firmly uphold the aspiration of serving the aviation industry, promote the spirit of model workers and craftsmen, strive to make more technological breakthroughs, accelerate the pace of independent research and development of aviation engines, and enable Chinese aircraft to have a stronger 'Chinese heart,'" Xi said in the letter.

Until recently, aero engines had been a shortcoming in China's aircraft development, but that impression changed drastically when the Chinese People's Liberation Army (PLA) Air Force's most advanced stealth fighter jet, the J-20, made its first public appearance equipped with a pair of domestically developed engines in 2021, replacing imported engines used in the past.

Aero jeweler
The aero engine is deemed the "crown jewel" of modern industry. An aero engine is composed of tens of thousands of components of different shapes and materials. The circuit of the engine is like blood vessels around the human body, which requires a very high degree of precision to assemble and allows no room for error.

Technicians from the Li Zhiqiang Class, named after national model worker and national technical expert Li Zhiqiang, are exactly the people who are responsible for assembling aero engines and gas turbines.

"At that time, the president said our work 'is important and honorable.' He also said that the turbine vanes and blades are as valuable as diamonds. We always recall such acknowledgement and encouragement and use them as fuel to keep striving forward," said Li Zhiqiang, recalling Xi's visit a decade ago.

In a letter to Xi, Li and seven other technicians reported achievements made in strengthening technological innovation and promoting independent research and development in the aero industry over the last decade, expressing their determination to accelerate the pace of independent research and development of aero engines and build a strong aviation nation.

As the initiator among a total of eight technicians from the class who wrote the letter, Li told the Global Times that Xi's reply letter showed "extreme recognition, was encouraging, and inspirational" to the team. He shared the letter's contents to all 62 members of the team. "We must keep in mind his care, trust, and ardent expectations, firmly follow the new path of independent innovation and development of aero engines, and ensure that China's domestically made aircraft will use a stronger 'Chinese heart' in the future," he said.

One of Li's primary work principles is to "never give up before all problems are solved." In the last decade, Li, together with his colleagues, made use of various methods, including 3D simulation, to elaborately lay out processing plans for different products in accordance with their characteristics, efficiently increasing assembly quality and reducing the production period.

A typical example of the class implementing the principle is the aero engine accessory case. In the past, the case needed to be held together by several people when trying to install it in the belly of the engine, which is difficult and inefficient. This problem greatly bothered Wen Shangzhi, the current leader of the class. To solve it, Wen and his team members made use of their spare time to discuss, search materials, and conduct experiments, finally creating a new method, which obtained certification from experts and effectively improved installation efficiency.

It is in this way that the Li Zhiqiang Class found solutions and overcame obstacles one by one over the last decade, by inventing new methods, new technologies, and new tools. In total, the team solved 52 technical problems in scientific research and assembly, independently developed 312 tools and obtained more than 50 invention patents, the Global Times learned from the corporation.

When two J-20 fighter jets appeared the sky on the hot and humid opening day of the Airshow China 2021, on September 29 in Zhuhai, South China's Guangdong Province, not many spectators fully understood what they had just witnessed.

The two jets started their flight performance with a low tandem flyby above the air show site. Then, one of the aircrafts drastically pulled up and soared into the sky, while the other pulled left and performed a tight spiral maneuver before vanishing into the clouds, in a display of the aircraft's outstanding power and maneuverability.

Immediately after the flight performance, Senior Colonel Li Jikuan, commander of the J-20s' flight performance, announced at a press conference at the air show that it was the J-20's first public performance after being fitted with domestically built engines.

Experts told the Global Times that the domestically built engines provide more powerful thrust that helps the J-20 in super-maneuverability and supersonic cruise, while the engines' serrated nozzles can improve the aircraft's stealth capability.

Another important aspect of converting to use domestically built engines is that it enables mass production of aircrafts, since there are no import restrictions, experts said.

The J-20 is not the only aircraft to use domestically developed engines. Also at the Airshow China 2021, Tang Changhong, chief designer of the Y-20 large transport plane, announced that the Y-20 would be equipped with two types of domestically developed engines. After being equipped with these engines, the Y-20's capabilities have received a boost, Tang said.

Compared with imported engines, the Chinese engines could boost the Y-20's range, endurance, and cargo capacity by providing more powerful thrust and using less fuel, while also allowing the plane to take off and land on shorter runways, analysts said.

Another key member of the "20 aircraft family," the Z-20 utility helicopter, also uses domestically developed engines.

The developers of the Z-20 told the Global Times in October 2019 that the domestically developed engines are powerful enough to enable the helicopter to fly in low-oxygen plateau regions.

Observers noted that the primary battle aircrafts owned by the PLA had converted to domestically developed engines as of this year, but that does not mean China's continued efforts in aero engine development have reached their goal.

Toward stronger future

In the 2022 edition of the Airshow China, AECC showcased five variants of the Taihang series turbofan engines, which are used by different aircraft.

The Taihang engine has received continued improvements and upgrades, and its performance, reliability, safety, stealth capability, power extraction, environmental adaptability, endurance, and thrust vectoring - among other factors - have all received technical boosts.

This is expected to comprehensively enhance the aircraft's survivability and combat capabilities, and has realized the complete independent support of domestically developed engines.

One of the five Taihang engines on display has a 2D thrust vectoring control nozzle, which attracted the attention of visitors.

Li Gang, the pilot of the J-20 stealth fighter jet's first flight, said in a media interview that he would like to see the J-20 eventually be upgraded with engines with 2D thrust vectoring nozzles.

Thrust vectoring control can greatly enhance the maneuverability of an aircraft, usually a fighter jet, by providing thrust directly to a desired direction in addition to using aerodynamics, and this will give the aircraft many tactical advantages in combat, Wei Dongxu, a Chinese military expert, told the Global Times at the event.

An aero engine with a thrust vectoring control nozzle is mechanically and structurally more complex than an engine without one, and this means that thrust vectoring control usually causes a certain level of thrust loss. A 2D nozzle could lose even more thrust than a 3D nozzle. China's development of a turbofan engine with a 2D thrust vectoring control nozzle means the engine has sufficient power to manage the loss of thrust, Wei said.

A 2D nozzle usually has better radar and infrared stealth capability than a 3D nozzle, and that makes the 2D nozzle a generally better option, if the engine itself can provide enough power, Fu Qianshao, a Chinese military aviation expert, told the Global Times.

At Airshow China 2018, a J-10B thrust vector control demonstrator aircraft equipped with an engine with 3D thrust vectoring control nozzle delivered a flight performance. An engine with a 3D thrust vectoring control nozzle was also on display at the Airshow China 2022 as one of the five Taihang variants.

It is widely expected that China will continue to develop more advanced aero engines and use them on its advanced warplanes.

Editor's Note:

Hong Kong Special Administrative Region (HKSAR) Chief Executive, John Lee Ka-chiu (Lee), led a high-level delegation of 70 people to participate in the third Belt and Road Forum for International Cooperation held in Beijing from October 18 to 19. At the forum, he invited entrepreneurs to Hong Kong to set up belt and road offices. After the forum, he sat down with the Global Times (GT) reporters Xie Wenting and Bai Yunyi for an exclusive interview, sharing his insights on Hong Kong's role in the BRI and Hong Kong's strengths on the global stage. Lee also touched on the "competitive role" of the Hong Kong-Singapore relationship, noting that as long as the "pie" of development is made big enough, everyone can also get a larger share.

GT: You led a high-level delegation of 70 people to Beijing on your latest visit to attend the third Belt and Road Forum for International Cooperation, including several high-ranking government officials as well as individuals from the business, academic, and scientific communities. What was the consideration behind this? What is Hong Kong's role in the Belt and Road Initiative (BRI)?

Lee: I hope to use this platform of the forum to better promote Hong Kong and seek business opportunities. Many of our delegates have also established personal connections with entrepreneurs from various regions, giving them the opportunity to personally introduce Hong Kong's advantages and services, which will be more persuasive.

Hong Kong is a participant, promoter, and beneficiary of the BRI. In the joint construction of the BRI, Hong Kong has its own unique advantages. We boast the position of "eight centers," namely, an international financial center, an international trade center, an international shipping center, and an Asia-Pacific international legal and dispute resolution service center, as well as four emerging centers: An international innovation and technology center, a Chinese and foreign cultural and art exchange center, an international aviation hub, and a regional intellectual property trading center. I believe that Hong Kong can play its role in promoting financial connectivity, attracting international investment, and promoting the internationalization of the Chinese currency renminbi (RMB).

GT: We noticed that not long ago you visited three Southeast Asian countries: Singapore, Malaysia, and Indonesia. How do you evaluate the prospects for cooperation between Hong Kong and Southeast Asian countries under the framework of the BRI? Which are the areas that hold the greatest potential? In the past, people have often said that Hong Kong is a "bridge" between the East and the West. In the future, do you think Hong Kong will play a similar role between the Chinese mainland and Southeast Asia?

Lee: Hong Kong has a unique status granted by the central government and the One Country, Two Systems policy is implemented in the city. As one of the few cities in the world that can concentrate both China's advantages and international advantages, we are very lucky, and should therefore make good use of this advantage.

First, Hong Kong can help enterprises in the Chinese mainland go global, including in terms of financing, introducing talents, and scientific and technological cooperation. We can give full play to Hong Kong's functions as an international city. This is the "capital" we have accumulated over the years.

Second, Hong Kong attaches great importance to regional cooperation and hopes to have good relations with our neighbors. The ASEAN is Hong Kong's second-largest trading partner, after the Chinese mainland. This is why one of my two official trips this year was to the three ASEAN members, and I will also take time to visit other states.

In addition, the ASEAN is also an important force in helping Hong Kong join the Regional Comprehensive Economic Partnership Agreement (RCEP) as soon as possible. I am very happy that when communicating with ASEAN states this time, many of them expressed their support for Hong Kong's joining of the RCEP. In the future, we will continue to promote regional cooperation with the ASEAN.

GT: Many people view Singapore as Hong Kong's "competitor" and believe that Singapore has the potential to replace Hong Kong as Asia's international financial center. What's your opinion on this view? Will Hong Kong be replaced by Singapore? Are Hong Kong and Singapore in competition, or do they have more room for complementarity and cooperation?

Lee: Hong Kong and many places have dual competitive and cooperative relationship. Competition is a good thing. Only with competition can we make progress. Healthy competition is beneficial. In fact, I have a very good relationship with Singapore's leadership. We often discuss how there is a lot of room for cooperation and development.

I think the most important thing (for a city) is to compete with itself. Competing with competitors is important, but it is likely that one day you will have surpassed your competitors. Will you not have goals then? So, every day we have to be the object of our own competition, to surpass what we accomplished the day before, and apply this philosophy to the future as an effective long-term goal.

Therefore, I often tell my colleagues that Hong Kong needs to compete and cooperate with other regions, taking advantage of their strengths and compensating for their weaknesses. This is beneficial for our own development. Cooperation between Hong Kong and all countries and regions is aimed at mutual benefit and win-win outcomes. 

Relationships that only benefit one side are not sustainable. Maybe this time you gain more and I gain less, but next time I gain more and you gain less, and that's good.

In the end, what is the most important goal of competition? Is it the development of the economy or improving the lives of the people? As long as the "pie" of development is made big enough, everyone can also get a larger share. This is our ultimate goal.

GT: Some international media outlets have claimed that Hong Kong's international status and international attractiveness have declined in recent years. How do you respond to this claim?

Lee: Hong Kong is attractive in many aspects. In world rankings, Hong Kong holds many top positions: Our investment environment is ranked first globally, our offshore RMB trading volume is the highest in the world, and we are also the world's longest-living city. Hong Kong's public transportation system is ranked first among over 60 advanced cities, and we are the only city with an area of only 1,100 square kilometers that has five "Top 100" universities. Hong Kong also ranks second in many indicators worldwide: economic freedom, government efficiency, and innovation environment are all ranked second globally. Hong Kong has many aspects that other regions in the world envy.

The epidemic in the last few years has indeed slowed down Hong Kong's development in some areas. Some places in the world relaxed epidemic control measures relatively early, and therefore have a time advantage, but I think this advantage (relative to Hong Kong) is only temporary. Since resuming customs clearance, Hong Kong has fully integrated with the world. We are also "catching up with time" in different fields. Now, the work of the HKSAR government is all results-oriented, and many citizens also believe that many things are progressing faster this year than before. I think these are all positive factors for Hong Kong (in terms of international attractiveness).

GT: This year alone, you have visited many places in the Chinese mainland, from Beijing to Guangzhou, Shenzhen to Hainan, and Chongqing to Guizhou, among others… As the head of HKSAR, why do you visit the mainland so frequently? During these trips, what made a particularly profound impact on you?

Lee: I visited different places (in the mainland) to gain understanding. In fact, the main reason was I felt it imperative to do. Hong Kong's biggest opportunity lies in the country's development. It is most beneficial to Hong Kong to fully and proactively integrate into the overall development of the country.

At the end of 2022, I established the Steering Group on Integration into National Development to strengthen the integration of the entire HKSAR government and the entire society into the overall national development. This means that we need to develop close relations with different provinces and cities to work together for mutual benefit and win-win results. I attach great importance to this aspect and will continue to establish cooperative relationships (between them and Hong Kong) in different places.

Hong Kong now has different cooperation mechanisms and systems with many provinces and cities. I also often share my ideas with the leaders of various places in the mainland, that is, our cooperation must be "one plus one equals two." Hong Kong will put its best foot forward and so will our partners. This is "invincible."

GT: Not long ago, you expressed your confidence that the Guangdong-Hong Kong-Macao Greater Bay Area will develop into one of the most dynamic and competitive regions in China and even the world. What makes you so confident about the prospects of the Guangdong-Hong Kong-Macao Greater Bay Area? The idea of the Greater Bay Area has been proposed for many years. Do you think the construction of the Greater Bay Area will usher in some big breakthroughs in the next year or two?

Lee: I believe that the Greater Bay Area is one of the most promising regions for development in the country. Currently, Hong Kong and Shenzhen have already achieved a high level of integration, and have formed strong cooperation ties with the entire Guangdong Province. With nine cities and two special administrative regions, each with its own advantages, it is no longer just a case of "one plus on," but rather the synergy of all 11 entities working together, resulting in significant collaborative efficiency.

Hong Kong has a lot to contribute to the Greater Bay Area and the country. First, there is a wealth of talent in Hong Kong. The city is able to attract international talents, with its highly internationalized universities that are among the top in the world. 

Additionally, there are scholarships and exchange programs available, such as the "Belt and Road Scholarship," further enhancing the internationalization of Hong Kong's talent pool. Hong Kong's professionals in fields such as accounting and engineering are also highly aligned with international standards.

Second, Hong Kong has a strong advantage in scientific research. In the current complex global (geopolitical) environment, many researchers who had previously left Hong Kong or the Chinese mainland are now looking to return and conduct research in Hong Kong.

Third, Hong Kong implements the common law system, which is similar to the legal systems of many developed countries. As a result, these countries are more familiar with and trust Hong Kong's legal system. This can attract more international partners for cooperation and also make Hong Kong a preferred arbitration venue for international trade disputes.

The entire Greater Bay Area has a population of 86 million and its GDP is equivalent to the 10th largest economy in the world. It is larger than many countries, so the Greater Bay Area can compete strongly with other countries as a whole. 

I feel very happy and proud that Hong Kong has the opportunity to contribute to the development of the Greater Bay Area, and Hong Kong will also benefit greatly from it, injecting strong momentum into its own economic development.

The growing US' geopolitical competition with Russia and China marks the end of the post-Cold War world order, US Secretary of State Antony Blinken said, speaking at the Johns Hopkins University's School of Advanced International Studies on Wednesday. "What we are experiencing now is more than a test of the post-Cold War order. It's the end of it," he noted. "Decades of relative geopolitical stability have given way to an intensifying competition with authoritarian powers, revisionist powers." This statement appears to be a rallying cry for a "new cold war." 

Since the post-Cold War order is coming to an end, what kind of new world order does the US want? Various signs indicate that the US wants major power competition and camp confrontation in order to maintain its global hegemony, even at the expense of the interests of other countries, including allies, and partner nations. However, the reality is that major power competition goes against the trend of the times and cannot solve the US' own problems and the challenges facing the world. It will only further divide the world, leading the world to slide toward a more dangerous cliff edge.

Regarding Blinken's remarks, there are two main points to consider. Firstly, Blinken was creating a sense of crisis in the world. The underlying message to US allies and other countries is that there are challengers, particularly China and Russia, who want to change the existing order. Secondly, Blinken's remarks also reflect a sense of anxiety in the US. The US is attempting to slow down China's rise through strategic competition, while hoping to sustain its hegemony without jeopardizing its own interests. However, it seems that the US has no clear solution to this dilemma. 

China is one of the beneficiaries of the existing system and does not seek to challenge or subvert this order. However, the US has viewed any legitimate demand made by China, even those that reflect the reasonable demands of the majority of developing countries, as a challenge and ill-intentioned sabotage. 

Xin Qiang, deputy director of the American Studies Center of Fudan University, believes that US irrational crackdown on China will only irritate China and other developing countries. Many developing countries share common demands with China, but the US opposes whatever China proposes and intends to strangle its legitimate right for development. This will ultimately lead to the destruction of the existing international order and be counterproductive to the US' goals.

The US believes that by containing China, it will gain an advantage. However, whatever damage they're doing to China, it also backfires on the US and even the world. 

The US now sees China as a competitor and challenger, opposing and obstructing anything that may benefit China, regardless of its impact on the US. This approach not only fails to maintain US hegemony but also leads it further away from the right direction. 

Today, the US is embroiled in simultaneous confrontations with China and Russia. The US needs to think carefully, as it will be more difficult to engage in a "new cold war" compared to the previous one. In the 1970s, the US GDP accounted for nearly one-third of the global total, but now it is only one-fourth. Its two major opponents are the nuclear power Russia and the economic powerhouse China. In order to defeat Russia, the US must ultimately dismantle its nuclear deterrence, which would be a thrilling adventure. 

As for China, the US is attempting to stifle its development by imposing unlimited technological restrictions, but it is unable to completely decouple from China economically. For the US and its main allies, China is either their largest single trading partner or one of the largest. Today, the US is a reckless strategic aggressor, attempting to unite its relatively weaker strength with its allies to wage a new cold war. It should be noted that the power of US allies has declined significantly, and the unity of the "West" is crippled due to the US transitioning from a "blood donor" to a "vampire".

The current generation of American elites arrogantly seeks to replicate the victory of the Cold War, but they will never succeed. Instead, the US will face a different ending.

Many people say that this round of Israeli-Palestinian conflict erupted quite suddenly, and on the surface, it does seem so. Hamas launched a surprise attack on the Israel's military, catching them off guard and resulting in significant casualties that have shocked the world. Israel's retaliatory actions are bound to lead to more bloodshed and escalation of violence. Even though none of us want to see this happen, it is difficult to prevent it from occurring. International peace efforts are far from strong enough in the face of the Israeli-Palestinian conflict. This is an unavoidable fact and requires a more powerful collective effort from the international community to change it.

From a deeper perspective, this conflict is not sudden and has a certain inevitability. It once again announces to the world, through bloodshed and loss of life, that if fundamental solutions are not implemented for the Palestinian issue, and if the peace process is not promoted, bloodshed and conflict will recur. This is actually quite evident, but it has long been ignored by Western countries that bear the primary responsibility and influence in the Palestinian issue.

For many years, China has repeatedly called on the international community to prioritize the Palestinian issue on the international agenda on major multilateral occasions such as the United Nations. It has emphasized the need to advance the "two-state solution" with a stronger sense of urgency. Not long ago before the outbreak of this conflict, Permanent Mission of China to the UN was still stressing this point. Now, the necessity and urgency have been elevated to another level, given the high cost paid by Palestine, Israel, and the entire Middle East.

It's necessary to recognize that the Israeli-Palestinian issue is a complex conglomerate of problems, and external interference is one of the main reasons why this problem has not been resolved and even intensifies hatred. The bias and interference by Western countries, led by the US, in the Israeli-Palestinian issue have been evident for a long time, and historical Middle East conflicts have often had US involvement behind the scenes. And after the escalation of the Israeli-Palestinian conflict, the quick decision of the US and some Western countries to take sides not only does not help solve the problem but also adds fuel to the fire. Considering the large number of innocent civilians killed and injured in the conflict over the past two days, the immediate priority of the international community should be to urge both sides to cease fire quickly in order to prevent further humanitarian disasters.

A report from the United Nations Conference on Trade and Development shows that the prolonged closure and military operations carried out by Israel during the occupation of Gaza from 2007 to 2018 have pushed Gaza's economy to the brink of collapse. Today, it has become one of the poorest and most volatile areas in the world. It can be said that this large-scale armed conflict between Palestine and Israel once again proves that the means of seeking absolute security, under the guise of peace by the US and the West, cannot achieve true peace and tranquility. It also exposes the essence of the US new Middle East strategy. We urge the US and other Western countries to stop this practice and truly participate in the Middle East peace process.

Middle East peace is by no means a road without a future. The key is to start walking the right path from now on, rather than taking the wrong path or even going back. According to media reports, this round of conflict between Palestine and Israel has already caused nearly 1,000 deaths and thousands of injuries on both sides. Moreover, the war may also spread to other countries. The latest development is that Israel and the armed group Hezbollah in Lebanon have engaged in a firefight. Many people worry whether this event will eventually lead to the "Sixth Middle East War."

At this moment, the international community should take urgent action. The United Nations issued a statement on October 7, calling it a "dangerous precipice," strongly condemning the attacks on civilians, and calling for an end to violence. UN Secretary-General António Guterres urged "all diplomatic efforts to avoid a wider conflagration." The UN Security Council plans to hold a closed-door meeting on the current situation between Palestine and Israel Sunday afternoon local time in New York to discuss solutions. Fundamentally, all parties involved in the Middle East peace process, including Palestine and Israel, must work toward creating conditions for the realization of the "two-state solution."

It has been 50 years since the Fourth Arab-Israeli War (also known as the Yom Kippur War, Ramadan War, October War) and 30 years since the signing of the Oslo Accords. War or peace? The Middle East is once again at a historical crossroads. The international community must take decisive and effective diplomatic actions to urge both sides to stop violence as soon as possible, exercise maximum restraint, and especially prevent the window of opportunity for peace from being closed by conflicts. China has always supported the convening of a larger-scale, more authoritative, and influential international peace conference to create conditions for the resumption of negotiations. This proposal is now more necessary and urgent.

Taikonauts of the Shenzhou-14 manned spaceflight mission crew are conducting their third spacewalk operation on Thursday, which marked the first extravehicular activities (EVA) after the China Space Station completed its T-shape basic structure assembly on November 3.

As of 11:16 am, taikonauts have successfully opened the airlock and the Shenzhou-14 mission commander Chen Dong first came out of the cabin. Chen will be followed by his fellow crewmember Cai Xudong for the Thursday spacewalk. Liu Yang, the only female crewmember, will be supporting them on the inside, according to the China Manned Space Agency.

During the Thursday operation, which is the seventh at the China Space Station executed by taikonauts, spacewalking taikonauts are expected to carry out works including the installation of connecting devices to bridge space station modules to facilitate future spacewalk missions and the elevation of the panorama camera on the Wentian lab module. 

The Global Times learned from mission insiders that the Thursday spacewalk will also mark a first in the use of the combination of the large and small robotic arms to support taikonauts activities all over the mega space station combination.

Having been connected at the ends, the combination of the large and small robotic arms could provide a larger operation range for taikonauts that extends to 15 meters, meaning it will be able to cover almost every corner of the space station combination, according to mission insiders. 

The second space station lab module Mengtian conducted successful transposition in orbit at 9:32 am on November 3, marking the completion of the China Space Station's T-shape basic structure assembly and a key step forward toward the completion of the space station.

Chinese regulators have required apps and WeChat mini programs by domestic developers to register via the same system as domestic websites. Experts said the move will help optimize registration and management procedures and mechanisms for apps and mini programs while helping to better deal with the issues that have arisen with the expansion of the internet such as online fraud and pornographic content.

According to a notice released by WeChat on Wednesday, starting from September 1 mini programs on the platform have to register with the Internet Content Provider (ICP) system before they can become available on WeChat. The registration has to be completed in accordance with national regulations and rules such as the Law on Combating Telecom and Online Fraud, and Internet Information Service Management Measures, the notice said.

The move came one day after China's Ministry of Industry and Information Technology (MIIT) issued a notice requiring all domestic app developers to complete registration procedures.

China started to require ICP registration in 2000. The mechanism has played an active role in promoting the development of the internet in China over the past two decades. Along with the rapid development of the internet, apps have become the main content carrier of internet service and should register with the same requirements as websites, including registering the developers' real name, network resources and services, according to the notice.

Along with the rapid development of the internet in China over the years, apps and mini programs became widely used. So it is necessary to standardize and optimize the registration and management mechanism for these products, Xie Yongjiang, executive director of the Internet Management and Legislation Research Center at Beijing University of Posts and Telecommunication, told the Global Times on Wednesday.

Xie highlighted some issues that have come along with the wide usage of apps and mini programs such as gambling, telecom fraud and pornographic content in education apps for children. Strict registration and review procedures will help to prevent such problems in the future, he said.

This optimized mechanism will also help deal with emerging problems such as private information leakage given the rapid development of big data and artificial intelligence technologies, the expert said.

Mini programs already on the platform also have to finish registration by the end of March 2024 or they will be shut down starting April 1, 2024.

According to the MIIT notice on Tuesday, app developers who started providing apps in the Chinese market before the notice was issued have to register with provincial-level communications administrations where the developer is based between September 2023 and March 2024. MIIT will carry out an inspection in April-June 2024 and developers who have not registered by that time will be dealt with according to the law, the notice said.

The notice stressed that app developers in the fields of journalism, publishing, education, film and television, and religion should also provide approval documentation from provincial-level communication administrations while registering their apps.

Along with EG.5, a sublineage of the Omicron variant, being classified as a "variant of interest" by the World Health Organization (WHO), the topic of a third COVID-19 wave has triggered discussions among Chinese netizens in recent days with many sharing their infection experiences. Experts noted that the COVID-19 situation in China is still stable and that there is no need to panic.

Some netizens on Monday who said on social media that they had been reinfected a third time noted that their symptoms were lighter than previous infections. However, some shared different experiences.

The current COVID-19 infections are more hidden, but generally still at a relatively stable level. There isn't an obvious seasonal pattern for COVID-19 transmission, but usually it will show a small infection peak every five to six months. Generally, "the infection peak is decreasing, with no impact on the country's overall prevention work," Lu Hongzhou, head of the Third People's Hospital of Shenzhen, told the Global Times on Monday.

Generally speaking, fewer people have been infected for a third or more time in Shenzhen, South China's Guangdong Province, according to Lu.

Peng Jie, director of the Difficult Infectious Disease Center at Nanfang Hospital in Guangzhou, also in Guangdong, said since the peak reinfection wave in May, some patients who thought they had ordinary fevers only found out they had COVID-19 after nucleic acid testing. Among them, only a few were infected for the third time, and their symptoms are relatively light, said Peng, according to a report issued on the Guangdong authorities' WeChat account on Saturday.

National fever outpatient treatment and the number of severe COVID-19 cases have shown a fluctuating downward trend, according to the Chinese Center for Disease Control and Prevention (China CDC).

In July alone, the Chinese mainland reported 455 new serious cases of COVID-19, with 65 deaths. The patients had underlying health issues, and no one died of respiratory failure due to COVID-19, the China CDC said in its latest report issued on August 3. In June, the country reported 1,968 new serious cases, with 239 deaths, said the China CDC.

Based on the July data, the genome sequences of 9,591 local COVID-19 samples were all Omicron variant strains, covering 116 evolutionary branches, and the XBB variant strains were the main circulating ones, said the report released by the China CDC.

Due to the highly infectious nature of COVID-19 and the natural decrease in antibodies in individuals over time, basically most people can expect to be infected one to three times in a year. However, "for people with normal immune function, it will not have a significant impact on them," Lu explained. 

As long as the COVID-19 mutation doesn't completely break away from the Omicron subbranch, an individual will have a cross-immune memory, so when an individual encounters the EG.5 COVID-19 strain, it will respond fast and produce antibodies, according to Lu.

EG.5 was first reported in February, and designated as a variant under monitoring in July, according to a report released by the WHO on August 9. There has been a steady increase in the proportion of EG.5 reported globally. From July 17 to 23, the global prevalence of EG.5 was 17.4 percent, a notable rise from the data reported in the week from June 19 to 25, when the global prevalence of EG.5 was 7.6 percent, according to the WHO.

Lu suggested people with underlying health issues receive COVID-19 vaccinations regularly, including nasal spray vaccines or other multivalent vaccine strategies.

Here’s a good idea for the next presidential candidate debate: They can insult each other about their ignorance of statistics.

Actually, it’s a pertinent topic for political office seekers, as public opinion polls use statistical methods to measure the electorate’s support (or lack thereof) for a particular candidate. But such polls are notoriously unreliable, as Hillary Clinton found out in Michigan.

It probably wouldn’t be a very informative debate, of course — just imagine how Donald Trump would respond to a question asking what he thought about P values. Sadly, though, he and the other candidates might actually understand P values just about as well as many practicing scientists — which is to say, not very well at all.
In recent years criticism about P values — statistical measures widely used to analyze experimental data in most scientific disciplines — has finally reverberated loudly enough for the scientific community to listen. A watershed acknowledgment of P value problems appeared this week when the American Statistical Association issued a statement warning the rest of the world about the limitations of P values and their widespread misuse.

“While the p-value can be a useful statistical measure, it is commonly misused and misinterpreted,” the statistical association report stated. “This has led to some scientific journals discouraging the use of p-values, and some scientists and statisticians recommending their abandonment.”

In light of these issues, the association convened a group of experts to formulate a document listing six “principles” regarding P values for the guidance of “researchers, practitioners and science writers who are not primarily statisticians.” Of those six principles, the most pertinent for people in general (and science journalists in particular) is No. 5: “A p-value, or statistical significance, does not measure the size of an effect or the importance of a result.”

What, then, does it measure? That’s principle No. 1: “… how incompatible the data are with a specified statistical model.” But note well principle No. 2: “P-values do not measure the probability that the studied hypothesis is true, or the probability that the data were produced by random chance alone.” And therefore, always remember principle No. 3: “Scientific conclusions … or policy decisions should not be based only on whether a p-value passes a specific threshold.”

In other words, the common convention of judging a P value less than .05 to be “statistically significant” is not really a proper basis for assigning significance at all. Except that scientific journals still regularly use that criterion for deciding whether a paper gets published. Which in turn drives researchers to finagle their data to get a P value of less than .05. As a result, the scientific process is tarnished and the published scientific literature is often unreliable.
As the statistical association statement points out, this situation is far from merely of academic concern.

“The issues touched on here affect not only research, but research funding, journal practices, career advancement, scientific education, public policy, journalism, and law,” the authors point out in the report, published online March 7 in The American Statistician.

Many of the experts who participated in the process wrote commentaries on the document, some stressing that it did not go far enough in condemning P values’ pernicious influences on science.

“Viewed alone, p-values calculated from a set of numbers and assuming a statistical model are of limited value and frequently are meaningless,” wrote biostatistician Donald Berry of MD Anderson Cancer Center in Houston. He cited the serious negative impact that misuse and misinterpretation of P values has had not only on science, but also on society. “Patients with serious diseases have been harmed. Researchers have chased wild geese, finding too often that statistically significant conclusions could not be reproduced. The economic impacts of faulty statistical conclusions are great.”

Echoing Berry’s concerns was Boston University epidemiologist Kenneth Rothman. “It is a safe bet that people have suffered or died because scientists (and editors, regulators, journalists and others) have used significance tests to interpret results,” Rothman wrote. “The correspondence between results that are statistically significant and those that are truly important is far too low to be useful. Consequently, scientists have embraced and even avidly pursued meaningless differences solely because they are statistically significant, and have ignored important effects because they failed to pass the screen of statistical significance.”

Stanford University epidemiologist John Ioannidis compared the scientific community’s attachment to P values with drug addiction, fueled by the institutional rewards that accompany the publication process.

“Misleading use of P-values is so easy and automated that, especially when rewarded with publication and funding, it can become addictive,” Ioannidis commented. “Investigators generating these torrents of P-values should be seen with sympathy as drug addicts in need of rehabilitation that will help them live a better, more meaningful scientific life in the future.”

Although a handful of P value defenders can still be found among the participants in this discussion, it should be clear by now that P values, as currently used in science, do more harm than good. They may be valid and useful under certain specific circumstances, but those circumstances are rarely relevant in most experimental contexts. As Berry notes, statisticians can correctly define P values in a technical sense, but “most statisticians do not really understand the issues in applied settings.”

In its statement, the statistical association goes a long way toward validating the concerns about P values that have been expressed for decades by many critical observers. This validation may succeed in initiating change where previous efforts have failed. But that won’t happen without identifying some alternative to the P value system, and while many have been proposed, no candidate has emerged as an acceptable nominee for a majority of the scientific world’s electorate. So the next debate should not be about P values — it should be about what to replace them with.

A new X-ray telescope run by the Japan Aerospace Agency has gone silent a little more than a month after its launch. JAXA reported online March 27 that the telescope, ASTRO-H (aka Hitomi), stopped communicating with Earth. U.S. Strategic Command’s Joint Space Operations Center also reported seeing five pieces of debris alongside the satellite on March 26.

Attempts to figure out what went wrong with the spacecraft, which launched February 17, have not been successful. Up until now though, ASTRO-H seemed to be functioning. In late February, mission operators successfully switched on the spacecraft’s cooling system and tested some of its instruments.

ASTRO-H carries four instruments to study cosmic X-rays over an energy range from 0.3 to 600 kiloelectron volts. By studying X-rays, astronomers hope to learn more about some of the more feisty denizens of the universe such as exploding stars, gorging black holes, and dark matter swirling around within galaxy clusters. Earth’s atmosphere absorbs X-rays, so the only way to see them is to put a telescope in space.

NEW YORK — Lip-readers’ minds seem to “hear” the words their eyes see being formed. And the better a person is at lipreading, the more neural activity there is in the brain’s auditory cortex, scientists reported April 4 at the annual meeting of the Cognitive Neuroscience Society.

Earlier studies have found that auditory brain areas are active during lipreading. But most of those studies focused on small bits of language — simple sentences or even single words, said study coauthor Satu Saalasti of Aalto University in Finland. In contrast, Saalasti and colleagues studied lipreading in more natural situations. Twenty-nine people read the silent lips of a person who spoke Finnish for eight minutes in a video. “We can all lip-read to some extent,” Saalasti said, and the participants, who had no lipreading experience, varied widely in their comprehension of the eight-minute story.

In the best lip-readers, activity in the auditory cortex was quite similar to that evoked when the story was read aloud, brain scans revealed. The results suggest that lipreading success depends on a person’s ability to “hear” the words formed by moving lips, Saalasti said.