On June 4th, the return capsule of Shenzhou XV manned spacecraft landed successfully at Dongfeng landing site, and all astronauts Fei Junlong, Deng Qingming and Zhang Lu got out safely and smoothly.

　　Shenzhou series spaceships are the "boats of life" for astronauts to travel back and forth between heaven and earth. They fly for dreams again and again, return safely again and again, and "feel good" again and again, which can not be separated from the cautious and meticulous style of sailing, and also marks the continuous maturity and perfection of China manned space technology in iterative innovation.

　　Come back from scratch.

　　The return of Shenzhou XV manned spacecraft is the first return mission after China’s space station has been transferred to the application and development stage. The GNC (Guidance, Navigation and Control) subsystem, thermal control subsystem, structural subsystem, recovery and landing subsystem, TT&C communication subsystem, digital control subsystem and overall circuit subsystem of the Fifth Academy of China Aerospace Science and Technology Corporation (hereinafter referred to as the Fifth Academy) work closely together and make the best preparations.

　　When the Shenzhou 15 manned spacecraft landing site recovery test team entered the site, Yu He, the commander-in-chief of the manned spacecraft system, mobilized everyone to "return from a hundred battles and start from scratch".

　　Liu Qingbo, the chief designer of the manned spacecraft system of the Fifth Academy, said: "Although we have successfully completed many recycling tasks before, we must not be slack. We must treat every workflow more rigorously and do every drill and every resumption."

　　In order to strengthen the on-site disposal process management of the return capsule, the test team members optimized and improved the disposal process and plan and other related documents in more detail. They strictly implement the system of pre-shift meeting and resumption meeting, find problems, identify risks, make plans, make careful arrangements in advance, and make careful resumption afterwards to ensure adequate task preparation.

　　"As soon as we entered the launch site, we immediately began to refine and improve the workflow of the landing site to further improve the efficiency and standardization of task implementation." Peng Huakang, the overall head of the manned spacecraft recycling test team of the Fifth Academy, said.

　　Interlocking and meticulous step by step.

　　According to Peng Huakang, the return of the Shenzhou XV manned spacecraft is divided into five stages: separation, braking, reentry, deceleration and landing buffering, which can be said to be interlocking and meticulous step by step.

　　Separation stage — — This return still continues the rapid return plan since Shenzhou XIII, that is, the Shenzhou XV manned spacecraft separated from the space station assembly and flew around the earth for five times, and then began to return to the ground. Subsequently, the spacecraft return module was separated from the orbital module.

　　Braking stage — — Shenzhou XV manned spacecraft continued the prediction since Shenzhou XII — — Correct the double-loop guidance mode, so that the return module can enter the earth’s atmosphere at an accurately calculated reentry angle, and the propulsion module will burn when crossing the atmosphere.

　　Reentry stage — — The engine on the cabin adjusts the return cabin to the balanced state with the big bottom facing forward, and then re-enters by means of lift control. In the black barrier area of reentry, the signal between the return capsule and the ground was interrupted, and the development team designed a set of automatic processing methods to ensure that the capsule passed through the black barrier area smoothly.

　　Deceleration phase — — When it is about 10 kilometers from the ground, the guide umbrella, deceleration umbrella and main umbrella of the return capsule are opened one after another, reducing the speed of the spacecraft to several meters per second.

　　Landing buffer phase — — When it is about 1 meter from the ground, the reverse engine will ignite downwards, which will further slow down the return capsule and finally land at a speed of 1 to 2 meters per second.

　　In order to ensure foolproof, the test team conducted four full-process desktop deduction and three full-system comprehensive drills in advance, focusing on the normal and fault handling processes, fault plans, handling procedures, safety requirements, and key links, and combined with the landing site system to drill and verify the weak links.

　　"Every system-wide comprehensive drill is a 1: 1 simulation, and every link and every key action in the return mission is put in place." Peng Huakang said that they also prepared more than 20 kinds of disposal plans around three major failure modes: return process failure, abnormal landing environment and disposal process failure.

　　In the end, the technical team of the Fifth Academy of Sciences ensured the successful landing of the spacecraft return capsule with high quality, and once again protected the astronauts to go home safely.

　　GNC system update

　　GNC technology of space rendezvous and docking is one of the three basic technologies of manned space flight. All the GNC systems of Shenzhou manned spacecraft and Tianzhou cargo spacecraft launched so far in China were developed by 502 of the Fifth Academy.

　　Marked by the success of the return mission of Shenzhou 15 manned spacecraft, China’s GNC system, which is characterized by autonomous rapid rendezvous and docking and autonomous adaptive prediction of reentry and return guidance, has been fully upgraded since Shenzhou 12 spacecraft.

　　The GNC technology of Chinese spacecraft’s return and reentry has gone through two generations. The first-generation return technology was applied to 11 spacecraft from Shenzhou I to Shenzhou XI, and the second-generation return re-entry technology was adopted for the batch of 4 shenzhou spaceship from Shenzhou XII to Shenzhou XV, which achieved many breakthroughs from slow rendezvous and docking to rapid rendezvous and docking, from facing single cabin to facing multiple cabins, and from single-pair interface to multi-pair interface.

　　"The worst return accuracy after adopting the second-generation return technology is better than the best of the first generation." Hu Jun, deputy chief designer of the manned spacecraft system of the Fifth Academy of Sciences, said that if the first-generation technology is adopted, when there is a wide range of orbital conditions change, manual intervention on the ground is needed. If the second generation technology is adopted, the GNC system can adapt itself, and it can achieve a series of "stronger" and "better", and it can also "hit where it refers to" in the return accuracy.

　　The continuous "accurate landing" of four shenzhou spaceship ships further proves that this method is scientific, stable, advanced and adaptable, and promotes the smooth progress of the mission of China Space Station.

　　Speaking of the team’s many years of experience in tackling key problems, Xie Yongchun, chief expert of rendezvous and docking in No.502 Institute of the Fifth Academy, said: "China’s rendezvous and docking technology embodies China’s wisdom and Chinese strength."

　　The umbrella of life has made new contributions.

　　Every movement during the return of Shenzhou XV manned spacecraft touched people’s hearts. When the spacecraft is about to return to the ground, a big red and white umbrella blooms as scheduled. This astronaut’s "Umbrella of Life" was developed by 508 of the Fifth Academy, with an umbrella covering an area of 1,200 square meters, which can cover about three standard basketball courts.

　　After the establishment of China’s manned spaceflight project in 1992, the development of manned spacecraft parachutes was put on the agenda. Based on the detailed analysis of technical indicators and operating conditions, the development team of the recovery landing subsystem of No.508 Institute of the Fifth Hospital decided to take the 1,200-square-meter large circular sail umbrella as the deceleration scheme of the main umbrella. After a large number of repeated tests and verifications, the developers have worked hard for many years and finally overcome many technical difficulties such as the design, manufacture, test and final assembly of extra-large parachutes.

　　From the successful launch of Shenzhou-1 to the glorious return of Shenzhou-15, the umbrella continued to innovate and optimize. During the spacecraft missions from Shenzhou 12 to Shenzhou 15, the development of batch products of recovery and landing subsystem involves 12 technical status changes in 5 categories. The R&D team thoroughly studied the product mechanism, fully demonstrated and tested, strengthened the quality control of the R&D process, and ensured that all key processes were well documented and foolproof.

　　The blooming of umbrella flowers means that the astronauts will arrive safely soon. The return of the Shenzhou XV astronaut by a group of "dreams come true" means that the umbrella has protected Chinese and completed the 10th manned flight.

　　□ Our reporter Lian Yingting

　　□ Our correspondent Ren Xinyu Luo Weiwei

With the steady increase of vaccine supply in China, vaccination in COVID-19 has been accelerated again. Since China started the vaccination work in COVID-19, all localities have strengthened the connection between vaccine supply and demand, and the vaccination system has operated efficiently.

According to official website, the National Health and Wellness Commission, as of April 8, 2021, 31 provinces (autonomous regions and municipalities directly under the Central Government) and Xinjiang Production and Construction Corps have reported 155.15 million doses of Covid-19 vaccine.

"The best way to prevent COVID-19 is to vaccinate. Vaccination can effectively protect individuals and people, and once the epidemic situation is imported, it can reduce the infection rate, severe disease rate and mortality rate of people. Therefore, even if the domestic epidemic prevention and control situation is improving, it is still necessary for people to be vaccinated. " Gao Fu said.

　　Xinhua News Agency, Beijing, December 5th, by topic:Create a position to cultivate and practice socialist core values — — Relevant persons in charge of the Ministry of Culture, National Cultural Heritage Administration and China Association for Science and Technology talked about the implementation of the "Implementation Opinions on Public Cultural Facilities to Carry out Volunteer Service of Learning from Lei Feng"

　　Xinhua News Agency reporter Leo Chou

　　In order to give full play to the position role of public cultural facilities in learning from Lei Feng’s volunteer service, steadily promote the construction of public cultural facilities’ volunteer service sites, and promote the extensive and in-depth development of cultural volunteer service, Publicity Department of the Communist Party of China, the Central Civilization Office, the Ministry of Culture and other seven departments recently issued the "Implementation Opinions on Learning from Lei Feng’s Volunteer Service in Public Cultural Facilities".

　　Responsible persons of the Ministry of Culture, National Cultural Heritage Administration and China Association for Science and Technology said that the voluntary service of learning from Lei Feng in public cultural facilities has continued the traditional virtues of the Chinese nation, embodied profound cultural accumulation, distinctive characteristics of the times and noble spiritual pursuit, and is an important way to practice socialist core values and an inherent requirement for accelerating the construction of a modern public cultural service system.

　　Ministry of Culture: Cultural Volunteer Service Promotes the Construction of Modern Public Cultural Service System

　　Q: The "Thirteenth Five-Year Plan" period is a crucial period for building a modern public cultural service system. What is the special significance of vigorously developing cultural volunteer service, especially in public cultural facilities to learn from Lei Feng?

　　A: The "Thirteenth Five-Year Plan" period is the decisive stage for China to build a well-off society in an all-round way. Strengthening cultural voluntary service is of great significance for promoting the prosperity and development of cultural undertakings, spreading advanced culture and improving the level of social civilization. The first is an important way to practice the socialist core values. Cultural voluntary service embodies the functions of culture leading fashion, educating people, serving society and promoting development, which is an important way to promote the implementation of socialist core values and integrate them into people’s daily lives. The second is the inherent requirement of accelerating the construction of a modern public cultural service system. Cultural voluntary service, with its various forms and flexible ways, can effectively make up for the lack of cultural services provided by the government and the market, provide targeted services and improve the quality and effect of public cultural services. Third, it is an important means to play the role of the masses as the main body and stimulate the endogenous motivation of cultural development. Cultural voluntary service is an important platform for the masses to participate in cultural construction, which is conducive to the formation of a good situation in which everyone can do his best and share with everyone everywhere, and promotes the sustainable development of public cultural services.

　　Q: What principles should public cultural facilities follow to carry out the voluntary service of learning from Lei Feng? What is the main purpose of this work?

　　A: We should grasp four principles: First, adhere to the correct orientation. We should firmly establish a people-centered work orientation, integrate socialist core values into cultural voluntary service, guide people to serve others and contribute to society, and advocate a healthy and civilized lifestyle. The second is to adhere to cultural education. Guide people to establish and adhere to the correct view of history, nationality, country and culture. The third is to adhere to the demonstration drive. Take the lead in doing a good job in the volunteer service of national public cultural facilities, demonstrate and promote the healthy development of various volunteer service organizations and service projects, and promote the institutionalization and normalization of learning from Lei Feng’s volunteer service. The fourth is to persist in reform and innovation. Incorporate the support and development of voluntary services for public cultural facilities into the cultural system reform, and promote the standardization and equalization of basic public cultural services. Deepen the innovation of volunteer service content, form and management mode.

　　The main purpose of carrying out Lei Feng’s volunteer service in public cultural facilities is to further enrich the free and open items and contents of public cultural facilities and expand the service methods and channels by continuously expanding the volunteer team, carrying out volunteer service activities in depth and building a volunteer service brand, so as to effectively improve the service capacity and service level of public cultural facilities and promote the overall improvement of public cultural service efficiency.

　　Q: What are the main specific measures and requirements for public cultural facilities to carry out the voluntary service of learning from Lei Feng?

　　A: First, expand the volunteer team. Encourage healthy young people, teenagers, experts and scholars, and social celebrities to actively participate. The second is to carry out volunteer service activities in depth. Establish volunteer service organizations, volunteer service sites and volunteer service platforms as needed; Carefully design volunteer service projects, accurately recruit volunteers and build brand projects; Volunteer service for the elderly, minors, the disabled, migrant workers and people with difficulties in life; Actively explore "voluntary service in internet plus" to promote the specialization, characteristics and accuracy of voluntary service. The third is to establish and improve the voluntary service system for public cultural facilities. In accordance with the provisions of the measures for the administration of cultural volunteer service, we should further improve the system of volunteer recruitment and registration, training management, assessment and incentives.

　　In addition, public cultural facilities should provide necessary financial support for volunteer service, purchase necessary insurance, provide basic protection, and earnestly safeguard the legitimate rights and interests of volunteers.

　　Q: What are the plans of the Ministry of Culture to continue to promote cultural voluntary service?

　　A: First, improve the service network and develop and expand the cultural volunteer service team. We will comprehensively establish cultural volunteer service institutions at the provincial, city and county levels, and promote the establishment of volunteer service stations (teams and institutes) in public cultural facilities. We will attract people from all walks of life who are enthusiastic about public welfare and cultural undertakings to participate in cultural volunteer service and develop and expand the team of cultural volunteers. The second is to strengthen capacity building and continuously improve the scientific and professional level of cultural volunteer service. Integrate spontaneous and scattered cultural volunteer service activities to promote the characteristics and accuracy of cultural volunteer service. Vigorously cultivate and develop professional cultural volunteer service teams and guide the professional development of cultural volunteer service. The third is to organize demonstration-oriented activities and establish a long-term mechanism for grassroots cultural volunteer service activities. Continue to promote the "Spring Rain Project" — — National cultural volunteers travel across the border and "have deep feelings for the earth" — — Volunteer service of the National Academy of Arts goes to the grassroots level and "sunshine project" — — Three demonstration activities of the rural cultural volunteer service action plan in the central and western regions guide all localities and units to carry out extensive activities. The fourth is to strengthen standardized management and promote the healthy development of cultural volunteer service. Organized and planned training and guidance for cultural volunteers in different levels. Encourage all localities to establish an incentive, feedback and commendation system for cultural volunteer services in light of actual conditions.

　　National Cultural Heritage Administration: The museum itself is a volunteer of the whole society.

　　Q: What role can the museum play in the voluntary service of learning from Lei Feng?

　　A: As one of the important public cultural facilities, museums provide public cultural services such as education and appreciation for the public. In this sense, the museum itself is a volunteer of the whole society.

　　At the same time, from the microscopic point of view, museums are also an important position to carry out voluntary activities and services. At present, about 50% of the 4692 museums in China have carried out museum volunteer work, with a total of nearly 250 thousand volunteers. Many volunteers have served for more than 1,000 hours, and some volunteers have even served for more than 3,000 hours, serving nearly 10,000 people.

　　In terms of quality, the composition of museum volunteers is more diversified and socialized. Museums attract more and more intellectuals, collectors, college students, foreigners and other effective forces with various occupations and qualities to join the volunteer team.

　　In addition, the volunteer work of the museum has gradually changed from a single exhibition explanation to participation in donation, collection management, cultural relics protection, publication editing, event planning and other key work of the museum, which has become an integral part of the museum.

　　Q: Please talk about how to improve the enthusiasm of museum volunteers.

　　A: Volunteers are an important bridge and link between the museum and the society. Carrying out the volunteer service of learning from Lei Feng makes the museum better move towards and serve the society, and expands the spread of historical and cultural knowledge and museum culture.

　　To enhance the enthusiasm of museum volunteers, I think we should work hard on the management, service and incentive mechanism of volunteers. In recent years, China Museum has carried out many positive explorations, strictly selecting volunteers to help improve their basic quality and professional level; Attach importance to volunteer pre-training and post planning, and constantly improve in practice. In addition, all kinds of museum resources are open to volunteers with certain professional and academic backgrounds as much as possible. At the same time, it also adopts various incentive measures to improve its enthusiasm and stability.

　　According to incomplete statistics, more than half of the museums that carry out volunteer work have set up working committees composed of volunteers and achieved self-management of volunteers.

　　Q: After the publication of "Implementation Opinions on Public Cultural Facilities to Carry out Volunteer Service of Learning from Lei Feng", what aspects will National Cultural Heritage Administration promote the development of museum volunteer activities?

　　A: First of all, in accordance with the requirements of the implementation opinions, we will vigorously organize and support various museums to actively convene volunteers, expand the volunteer team, and carry out the volunteer service work of learning from Lei Feng. Second, we will adhere to the principle of demonstration-driven, and do a solid job in establishing a volunteer service management mechanism in museums, memorial halls and other cultural and art units among the first batch of demonstration units. Third, we will promote the affiliated museums to strengthen the construction of volunteer service organizations and service projects, extensively carry out volunteer service activities like Lei Feng, and gradually realize the institutionalization and normalization of volunteer service in museums.

　　We will continue to support the professional committee of museum volunteers to actively organize relevant exchange activities, and promote the construction and development of museum volunteers and public welfare organizations. The Steering Committee has continuously improved the activity of "Selection of Top Ten Volunteer Stars in China Museum".

　　China Association for Science and Technology: Promoting the upgrading of volunteer service in science and technology museums.

　　Q: What has the China Association for Science and Technology done in the volunteer service of the Science and Technology Museum, and what are the specific measures to learn from Lei Feng?

　　A: Since the pilot project of free opening of the National Science and Technology Museum was launched in 2015, the scope of public science popularization services in the Science and Technology Museum has been continuously expanded, the audience flow has increased rapidly, and the strength of science popularization volunteers has been further strengthened. The six science and technology museums selected as the first demonstration units of public cultural facilities to carry out Lei Feng’s volunteer service have been actively and effectively exploring volunteer service. Take China Science and Technology Museum as an example. Every year, more than 10,000 volunteers participate in voluntary service.

　　China Association for Science and Technology will take this implementation opinion as an opportunity to promote the upgrading of volunteer service in the Science and Technology Museum. First, give full play to the leading role of six first demonstration units, including China Science and Technology Museum. Through the construction of demonstration units, we will further enhance the social public welfare image of China’s science and technology museums, build their volunteer service brands, explore the establishment of standardized and reproducible volunteer service models for science and technology museums, and learn from the mature volunteer service experience of foreign science centers to promote the common development of the whole industry. The second is to focus on cultivating "stars" of popular science volunteer service. Combine the volunteer service of the Science and Technology Museum with the construction of popular science volunteers, and work closely with the China Association for Science and Technology’s "image ambassador of popular science China" and "chief science communication expert" to excavate and cultivate the typical popular science volunteer service, do a good job in publicity and promotion, tell the stories of popular science volunteers and create a good atmosphere. The third is to explore the establishment of a service platform for popular science volunteers, and promote the close cooperation, resource sharing and joint efforts between science and technology museums and public cultural facilities such as libraries, museums, cultural centers, art galleries and revolutionary memorial halls, so as to promote the momentum and implementation of volunteer service for public cultural facilities.

　　Q: What has China Association for Science and Technology done to promote popular science volunteer service, and what will be the next step?

　　A: Since 2001, China Association for Science and Technology issued a notice on the pilot work of building a popular science volunteer team in China. For more than ten years, China Association for Science and Technology has made great efforts to set up eight types of national popular science volunteer teams: volunteer teams of young science and technology counselors, volunteer teams of serving the "three rural" grassroots, volunteer teams of explaining counselors, volunteer teams of primary school students and other popular science venues, volunteer teams of popular science creation, volunteer teams of community volunteers, volunteer teams of serving large-scale theme popular science activities, volunteer teams of high-level counseling lectures and decision-making consultation, and volunteer teams of learning societies. According to the results of 2015 national science popularization statistics, as of 2014, there were 3,206,100 registered science popularization volunteers nationwide.

　　During the "Thirteenth Five-Year Plan" period, China Association for Science and Technology will promote the construction of national science popularization volunteers, and build the China Science Popularization Volunteers Association, so as to achieve more than 5 million science popularization volunteers nationwide by 2020.

Original title:To the left, "Metauniverse" to the right.

The annual sci-fi blockbuster "Dune" directed by a new Hollywood director was recently released. However, in sharp contrast to the eager expectation of sci-fi fans, the domestic box office of Dune has always been tepid, with only 245 million box office in the past month, which is far from people’s expectations before its release.

However, while the film Dune was cold in China, another topic with a sense of science fiction — — The "meta-universe", however, became popular because Facebook changed its name to "M e t a v e r s e" (meaning "meta-universe"). The so-called "meta-universe" is a virtual space that provides immersive experience and realistic feeling. The discussion on "Metauniverse" once went beyond the fields of science and technology and finance, and even rose to the humanistic height of the future destiny of mankind.

However, in the author’s opinion, the film Dune is cold and the topic of "Metauniverse" is exploding. These two seemingly completely unrelated topics actually have an implicit internal connection. To understand the essence of this connection, it is necessary to go deep into the field of science fiction literature history shared by these two topics.

Frank Herbert, the original author of Dune, was only a little-known independent journalist before he created this classic sci-fi work. Herbert, Washington, once lived in La Push, Washington for many years, and witnessed the process of local desertification due to ecological destruction. In the early 1960s, when the trend of ecologism was just emerging, the professional sensitivity of journalists inspired creative inspiration. Dune was officially published in 1965. Since then, Herbert has been developing this huge story universe for the rest of his life. Finally, one year before his death, The End of Dune was published, forming the true story of Dune. Dune, with its huge and rigorous world outlook and ups and downs of story, is closer to the writing techniques of mainstream literature in Europe and America. It won Hugo Award and Xingyun Award in one fell swoop, and was also selected into many lists such as Amazon’s "100 books that must be read in life", BBC’s "100 most popular books in Britain" and National Public Radio’s "TOP100 of science fiction and fantasy novels".

The success of Dune is closely related to the background of its creation. In the 1960s, the cold war between the United States and the Soviet Union gradually fell into a stalemate, and the space competition between the two countries became more and more intense, which objectively accelerated the development of human space technology. The gate of the stars and the sea seems to have slowly spread to mankind. At the same time, with the development of computer technology, the automatic production technology represented by industrial robots began to spread, and the theoretical research and engineering practice of artificial intelligence were also progressing steadily. Herbert obviously noticed these developments. About 10,000 years before the true story of Dune, he designed a man-machine war called "Butler Jihad". The cause of the war is that human beings realize that the development of artificial intelligence has threatened human survival and may turn human beings into "slaves". As a result, a two-generation war broke out between the camp that supported artificial intelligence and the camp that opposed artificial intelligence. In the end, the anti-artificial intelligence side won a complete victory, issued a decree to destroy all intelligent machines, and permanently banned the existence of any intelligent machines that simulated human beings. Without the help of intelligent machines, human beings can only strengthen their own abilities, and then differentiate into "new humans" with special abilities such as navigator, Mentat and Dr. Suk. The "spice" on the planet Erakos has become a necessity for space navigation in the dune world because of its special functions. And the only thing that can produce "spices"The planet Erakos has become the eye of the storm in all struggles.

As a big IP with "debut is the peak", Dune has naturally attracted the attention of Hollywood. However, as a film and television project, Dune is regarded as a "curse" by the industry because its content is too complicated and requires a lot of film and television special effects. However, Dune has provided creative inspiration for countless Hollywood directors, such as space empire in China, space mining in China, man-machine war in China, and so on.

However, back to reality, the world after the publication of Dune is getting farther and farther away from the "space future" described by the author. In fact, the space race between the United States and the Soviet Union is more like a "national strength show" between superpowers, which will eventually end because it is unsustainable. Today, the development of human space technology has also shifted from space exploration to space application. Compared with the 1960s and 1970s, there is no breakthrough.

In contrast, it was originally only used as a subsystem of the missile defense system — — However, computer network technology shows amazing development potential, and in the 1980s, it attracted wide attention of sci-fi creators. In 1982, a film containing artificial intelligence, consciousness uploading, Cyberspace and other elements was released; Two years later, William Gibson’s novel Nerve Wanderer won three science fiction awards, such as Hugo Award, Xingyun Award and Philip K. Dick Award. In 1992, neal stephenson described his imaginary cyberspace with "verse" in the novel Avalanche. The concept of "virtual world parallel to the real world and always online" now has a more resounding name — — "Metauniverse".

Are the "Space Empire" and "Metauniverse" in Dune really incompatible? I’m afraid not! In fact, since mankind entered the industrial age, science and technology have been continuously integrated. The underlying logic of scientific and technological development is to transform "non-resources" into resources and commercialize them to generate economic value. Today’s "stagnation" of space technology, on the one hand, is due to the lack of significant economic benefits of cutting-edge space technology, and it is difficult to attract capital attention. Another fundamental reason is that the human body structure evolved for the terrestrial environment of the earth. Let alone leave the earth and enter space, even if it leaves the surface, or comes to the underground and marine environment, it is difficult to survive. It can be seen that even if humans master interstellar space technology, large-scale space migration is unlikely to be realized.

Similarly, "metauniverse" is just a concept that needs technical support. It is not necessarily less difficult for human beings to create a virtual world in which they can live than to immigrate to Mars. But the reason why "Metauniverse" is favored by the capital market is that its ultimate goal looks more economically feasible — — If we can create another "world" outside the real world, it will inevitably bring considerable economic growth. This expectation itself is enough to make the real capital market crazy.

So, how can we keep mankind from being trapped in the earth forever because of indulging in the "meta-universe"? In fact, as shown in the movie: As a star, the sun will "die" one day. If human beings want to continue their own civilization, aerospace technology will inevitably become a necessity. If we believe that "space empire" and "meta-universe" can coexist in the future, then the subject of space immigrants may not be real people, but the consciousness of immigrants will be digitized and stored in the server of "cloud universe". It is obviously much easier to launch a server into space through a spaceship than to immigrate a real person into outer space. In this way, the goal of "immigration" will no longer be limited to the so-called livable planet, and human civilization will also spread to a broader universe.

Of course, the above is purely the author’s "scientific fantasy". This is also one of the most important values of science fiction for modern people, that is, to provide a field of thought experiments that can be infinitely extended. Whether it’s the space empire or the meta-universe, maybe the direction is different. But as long as the direction of human pursuit of happiness and rationality remains unchanged, we have reason to look forward to a bright future. (Author: Liu Jian, associate professor of Tianjin Art Vocational College, special expert of China Science Fiction Research Center)

Recently, the 54th Golden Horse Awards held a grand award ceremony, which was directed by director Wen Yan and won the honor of best director for the excellent works of word-of-mouth starring Vicky Chen, Zhou Meijun, Shi Ke, Geng Le and Li Mengnan. This film, which focuses on underage women’s aggression, tells the social pain points of China and even the world with a calm but powerful narrative, realistic but still warm and beautiful style. Since its release, the film has gained a high reputation, becoming Amway’s most noteworthy Chinese film by many media in 2017. At present, the film is being shown in the country.

　

Li Mengnan’s perfunctory things are "resentful"

　

In the film, acting star Li Mengnan plays the police captain Wang. As the defender of the people, Captain Wang is really selfless and dedicated to the people on the surface. However, with the deepening of the plot, his perfunctory inaction, procrastination and bystander all make the audience more and more puzzled. While promising to deal with the victims fairly, he is afraid of offending the powerful and wise to protect himself. Although Captain Wang is not "violent", his duties are perfunctory.

　

Interpreting Mingzhe to the extreme, netizens praised Li Mengnan’s acting skills

　

At the end of the film, the subtitles informed the public that Captain Wang was severely punished. Many fans left messages, "Li Mengnan really interpreted the words" to preserve our sanity "to the extreme," Captain Wang is not worthy of being a policeman, which really tickles people’s teeth ","I have seen many positive roles played by Li Mengnan, but I didn’t expect this complicated and inner drama Captain Wang to be interpreted so well by him. Let’s praise him ".

　

The film Carnival is not only of excellent quality, but also of obvious artistic height. It was shortlisted in the main competition unit of Venice International Film Festival and was nominated for the Golden Horse Award, which has a high reputation. What’s more, it reflects the social reality, has courage and has the responsibility of filmmakers. The film was released on November 24th, although only 1.2% of the films were released on the first day, but its excellent reputation and consistently leading attendance rate attracted the attention of the cinema. On the third day of release, the national film release rate of the film has been countered, rising to 4.5%. Professional film critics believe that Carnival is "undoubtedly the top ten Chinese films of the year", and ordinary audiences also call it "the conscience that China films lack most to face reality".

　　Core reading

　　In the first quarter of this year, the meteorological conditions were unfavorable, and the emissions were also increasing substantially, especially in some places where the "two high" projects were launched, and some enterprises even illegally discharged pollutants. But it is still under control. The Ministry of Ecology and Environment is confident to offset the uncertainty caused by economic growth and climate anomalies with greater emission reduction.

　　□ Our reporter Zhang Wei

　　"The sky turned orange." "Even the breath smells earthy." "Lost in the dust."

　　The strong sandstorm from March 19 to 23 was impressive, and then another round of sandstorm weather struck again. From April 1 to 3, there were dusty weather in southern and eastern Xinjiang, western Inner Mongolia, Gansu, Qaidam Basin in Qinghai, Ningxia and other places, and there were sandstorms in eastern and southern Xinjiang and parts of western Inner Mongolia.

　　"As of March 26, the proportion of excellent days in the country was lost by 5.4 percentage points, and the proportion of heavily polluted days increased by 1.2 percentage points." Liu Bingjiang, director of the Department of Atmospheric Environment of the Ministry of Ecology and Environment, said frankly that the air quality situation in the first quarter of this year is indeed not optimistic.

　　In addition to sandstorms, from the end of 2022 to the beginning of 2023, there were 11 days of New Year’s haze in Shaanxi and Henan provinces. With the economic recovery after the epidemic, the heavily polluted weather … … All these mean that it will be a challenging task to continue to fight the "blue sky defense war" in the new year proposed by this year’s National Ecological and Environmental Protection Work Conference.

　　Strengthen the forecast of dust and dust in the new year

　　According to the information released by the Ministry of Ecology and Environment, the severe sandstorm that occurred from March 19th to 23rd was the strongest and the most influential one this year, affecting 20 provinces, autonomous regions and municipalities in China. The concentrations of PM2.5 and PM10 in northern areas reached serious pollution, and the peak value of PM10 in Zhangjiakou, Hebei Province exceeded 9,000 μ g/m3.

　　Affected by the dust storm process, 140 cities across the country have experienced dust storm pollution with severity or above this year, among which 131 cities have experienced serious pollution, the highest in five years.

　　However, one fact that must be admitted is — — Since the 21st century, the sandstorm weather in China has been gradually decreasing, and the high incidence period is still concentrated from March to May. It is understood that since March this year, the dust process has been slightly more than the same period of last year, twice more than the same period of ten years. Especially this time from March 19th to 23rd, the meteorological department classified it as a strong sandstorm (according to the visibility, the meteorological department divided the sandstorm into five levels: extremely strong sandstorm, strong sandstorm, sandstorm, sand blowing and floating dust).

　　It is worth noting that according to the meteorological department, the end time of dust is judged by visibility. However, according to the monitoring of the Ministry of Ecology and Environment, the impact of dust on air quality is longer.

　　Liu Bingjiang analyzed that since March this year, there are two reasons for the more dusty weather: First, the underlying surface is conducive to dust activities. In 2022, the precipitation in Mongolia was less than that in the same period of 20 years, and the vegetation coverage in the sand source area was poor. Since March this year, the temperature in the south of Mongolia and the northwest of China has been 5-8 degrees Celsius higher than normal, especially in early March, when an extremely rare warming weather occurred, which led to the rapid melting of frozen soil sand. At the same time, there was basically no precipitation process in the sand source area, and the surface was not covered with snow, which was beneficial to dust activities.

　　Second, meteorological conditions are conducive to dust transport. This year, the intensity of cyclone in Mongolia is relatively strong, and there are many cold air activities. In the process of cold air moving eastward and southward, strong winds provide favorable meteorological conditions for dust particles to hoist into the upper air. Under the action of northwest airflow in the upper air, a large number of dust particles are transported and settled downstream, superimposed on the local sand source in Inner Mongolia, affecting the northern part of China.

　　According to the statistics of researchers, in the past decade, the number of sandstorms in the Gobi region of Mongolia has increased by four times compared with that in the 1960s. This spring, the precipitation in the sand source area from southern Mongolia to central and western Inner Mongolia is less than normal, and the temperature is higher than normal, and it is affected by the phased southward movement of Mongolian cyclone, which is conducive to the formation of dust weather process.

　　"It is estimated that the number of dust processes in northern China is more than that in the same period of the last decade, and this year is a big year of dust." Liu Bingjiang said that next, the Ministry of Ecology and Environment will work with the meteorological department to strengthen the air quality forecast, and when it is predicted that there may be dust, timely release information to remind the public to do a good job in health protection.

　　Enterprise illegal supervision is weak.

　　Another major event that aroused public concern about air quality this year was an 11-day New Year’s haze that occurred in China from the end of 2022 to the beginning of 2023.

　　This abnormal weather, which is concentrated in Shaanxi and Henan, has attracted great attention from the Ministry of Ecology and Environment. "We started the emergency plan for heavy pollution, but the effect is not ideal, which is illogical. ‘ If something goes wrong, there must be a demon ’ There are some problems in coping with this pollution process. " Liu Bingjiang said.

　　It is worth noting that in the air quality ranking of key cities in China in 2022, Hebei has all dropped out of the bottom ten, and now there are four in the bottom ten, and three in Shaanxi.

　　Since February, Huang Runqiu, Minister of the Ministry of Ecology and Environment, and Zhao Yingmin, Vice Minister of the Ministry of Ecology and Environment, have gone to Henan and Shaanxi to inspect enterprises in the way of "four noes and two straights". The surprise inspection achieved the expected results: 13 enterprises were inspected, and it was found that there were a large number of outstanding environmental violations such as abnormal operation of pollution control facilities, illegal discharge, falsification of production accounts, online monitoring and manual monitoring fraud. It also urged relevant provinces and cities to carry out investigations and resolutely investigate and deal with environmental violations according to law with a "zero tolerance" attitude. At present, 21 people have been detained in criminal detention and 11 in administrative detention, and related cases are still being further processed.

　　"Frequent corporate environmental violations have fully exposed the shortcomings of current air pollution prevention and control." Liu Bingjiang said that some enterprises ignore the law and break through the bottom line; In some places, the determination to tackle pollution is insufficient and the tenacity is insufficient; In some places, ecological environment supervision is superficial and weak.

　　To this end, the Ministry of Ecology and Environment will focus on key areas and key time periods, combine punishment with help, and urge enterprises to shoulder the main responsibility of atmospheric governance. Including seriously investigating and dealing with violations of the ecological environment, organizing warning education based on the case, adhering to the problem orientation, and cracking down on violations of the ecological environment with a "zero tolerance" attitude, and also advising illegal enterprises to fear the law. If they dare to break the law, they will be punished; Strengthen the capacity building of ecological environmental supervision, guide all localities to promote the implementation of ecological environmental protection with the same responsibility of the party and government, and increase supervision and law enforcement; Help enterprises improve pollution control facilities and clean up and rectify a number of simple and inefficient pollution control facilities.

　　The inflection point is not present, and the pressure is still high.

　　This year, the economy has fully recovered, pollutant emissions have increased, and the pressure of air quality rebound has increased.

　　"In the first quarter of this year, the meteorological conditions were unfavorable, and the emissions were also increasing substantially, especially in some places ‘ Lianggao ’ Projects, some enterprises even illegally discharge pollutants. But it is still within the controllable range. " Liu Bingjiang said.

　　It is understood that after the Minister of Ecology and Environment adopted the "four no’s and two straights" inspection method this year, actions in this regard are being carried out all over the country. "Enterprises will fully open all pollution control facilities, and some emissions will be reduced. In addition, for some inefficient or ineffective pollution control facilities, we will carry out renewal actions this year, which will also promote emission reduction. Under the premise of our current forecast of economic growth and emission reduction, we are confident to further improve air quality. " Liu Bingjiang said.

　　"However, the most difficult thing to grasp is the meteorological conditions." Liu Bingjiang explained, "It exceeded our expectations in the first quarter, and it is expected that the climate situation will change from La Nina to El Niñ o in autumn and winter this year, which is not conducive to cold air activities and pollution diffusion. How much effect this has on offsetting emission reductions is still uncertain. However, we are confident that we can offset the uncertainty caused by economic growth and climate anomalies with greater emission reduction. "

　　Liu Bingjiang said that at present, it is mainly the heavily polluted weather that affects people’s sense of blue sky, so the CPC Central Committee and the State Council require that the heavily polluted weather be basically eliminated in 2025. Compared with 2013, the days of heavy pollution in China have been greatly reduced, but now the results of air quality improvement are not stable enough. The turning point from quantitative change to qualitative change has not yet appeared, and the overall situation has not been shaken off by meteorological conditions. When encountering unfavorable meteorological conditions, heavy pollution weather is still frequent, especially since this year.

　　In November last year, the Ministry of Ecology and Environment, together with the National Development and Reform Commission, the Ministry of Industry and Information Technology, the Ministry of Transport and other departments, issued the Action Plan for Eliminating Heavy Pollution Weather. It is required to strictly control the emission increment of pollutants, resolutely curb the blind development of the "two high" projects, and withdraw from the backward production capacity of key industries according to laws and regulations; Strengthening the attack according to local conditions, the focus of Beijing-Tianjin-Hebei and its surrounding areas and Fenwei Plain is to optimize the industrial structure and layout; Do a good job in dealing with heavy polluted weather and strengthen the capacity building of air quality forecasting; Continue to improve the emergency emission reduction list, and promote the performance grading and differentiated control of key industries; Strengthen joint prevention and control of regional air pollution; Strengthen law enforcement supervision, strict daily supervision and enforcement, and mobilize outstanding backbone law enforcement personnel of the national environmental protection system to carry out intensive supervision and assistance in key areas.

　　"The goal of basically eliminating heavy pollution days in China in 2025 is to control it within 1%. Due to the insufficient imbalance of air pollution control in various places, the control objectives are different. There are also uncertainties such as rapid economic growth, abnormal climate, large-scale burning of straw and high-intensity large-scale discharge of fireworks and firecrackers. We will strictly control the increment, reduce the stock and accurately and scientifically deal with the uncertainty of heavy pollution process, and strive to achieve the goal." Liu Bingjiang said.

　　Xinhua News Agency, Chengdu, July 7th Question: Wild boar is no longer a national protected wild animal. How to find the balance between protection and hunting?

　　Xinhua News Agency "Xinhua Viewpoint" reporters Zhang Chaoqun, Gao Jianjun and Sun Qingqing

　　A few days ago, National Forestry and Grassland Administration released the newly adjusted List of Terrestrial Wild Animals with Important Ecological, Scientific and Social Values, and the wild boar that caused serious damage in many places in the country was transferred out of the list, which means that it no longer belongs to the wild animals protected by the state. What is the realistic background of this change? Does it mean that you can kill at will after calling out the list? How to find the balance between protection and hunting? "Xinhua Viewpoint" reporter conducted an investigation and interview on this.

　　Wild boar flooding in many places frequently hurts people and destroys things, and it has been called for a long time to delete them from the list.

　　The newly adjusted "Three Owns" list includes 1924 species of wild animals. Compared with the catalogue first published in 2000, more than 700 species of wild animals have been added while basically retaining the original species. The species listed in the original list are not naturally distributed in China, or widely distributed, with a very high population, no extinction risk, and may even cause harm.

　　"There is no threat to the survival of wild boar, and the population in many areas is too high, which is in line with the basic principle of adjustment." Jin Kun, a researcher at the Institute of Forest Ecological Environment and Nature Protection of China Academy of Forestry, said.

　　In 2021, Tudeng Xiangba, the 45-year-old village party secretary and village committee director of Zengde Village, Shangmula Township, Litang County, Ganzi Tibetan Autonomous Prefecture, Sichuan Province, was killed by a wild boar attack on his way to the mountain.

　　In Yuanshanzi Village, Tongjiang County, Bazhong City, Sichuan Province, wild boars "patronize" every three to five nights. Among the 334 households in the village, more than 100 villagers planted crops and fruits, which were damaged by wild boars. According to the comprehensive villagers’ evaluation of Tongjiang County Wildlife Conservation Center, there are more than 20,000 wild boars in the county. From March 2022 to March 2023, Tongjiang County accepted more than 700 reports of wild animals such as wild boar.

　　Since 2022, there have been more than 1,300 incidents of wild boar accidents recorded in Mianyang City, Sichuan Province, and eight people have been injured and more than 3,500 mu of crops have been damaged.

　　To this end, many county governments have to buy commercial insurance to make up for the losses caused by wild boar to farmers. Tongjiang County has spent more than 400,000 yuan in recent years to buy government rescue insurance for wildlife damage. In Mianyang City, five counties with serious wild boar hazards spend 100,000-300,000 yuan each year to buy commercial insurance with insurance coverage ranging from 1.2 million to 2 million yuan.

　　Not only in the countryside, but also in Nanjing, Hangzhou and other places. The data show that wild boar is distributed in 28 of the 31 provinces in China, among which 857 counties (cities, districts) in 26 provinces are harmed by wild boar, which has adversely affected the production and life of local people.

　　During the interview, the relevant departments of forestry and grassland in many places revealed that from the perspective of being conducive to social development and people’s lives, it has been called for a long time to delete wild boar from the "three haves" list. To this end, many places have made detailed wild boar population surveys and hazard assessments.

　　Can I kill wild boar at will in the future?

　　"I really can’t help it. The wild boar will eat 70 acres of my more than 100 acres." In a case heard by the People’s Court of Xichuan County, Henan Province in 2021, Wu Mou, who captured more than 8 wild boars with prohibited hunting equipment in the game reserve and during the game ban, stated this to the court.

　　Now, does bringing wild boar out of the list mean that you can kill wild boar at will?

　　Jin Kun and other experts said that after the wild boar was brought out of the list, it was easier to carry out hunting activities, but the principle of giving priority to protection should still be adhered to, and the provisions of laws and regulations such as no hunting area, no hunting period, no hunting tools and hunting methods, and national gun management should be strictly observed. When hunting wild boar, no harm should be caused to other wild animals protected by the state.

　　According to the relevant person in charge of the Wildlife and Wetland Protection Department of Sichuan Forestry and Grassland Bureau, one of the advantages of transferring wild boar out of the list is that the procedures are simpler at the grassroots level when dealing with the harm caused by wild boar and adopting population control.

　　"One pig, two bears, three tigers and leopards." During the interview, villagers in many places used this folk saying to describe the strong aggression of wild boar.

　　"The villagers can’t clean up the wild boar without tools", "the biting force is too strong", "the teeth are like knives" and "they dare not do it". The villagers in Xinyi Village, Muzuo Township, Pingwu County, Sichuan Province commented on the "lethality" of wild boar. Du Lin, the village party secretary, said, "A few years ago, an old lady in the village met a wild boar on the mountain, and her ankle was bitten off by a wild boar. She was barely able to walk on crutches after living in the hospital for more than two months."

　　Li Zhongyi, the criminal investigation team leader of the Forest Police Detachment of Mianyang City Public Security Bureau, said that most wild boars are social animals, and generally two or three sows hang out with a group of young pigs. In order to protect their young, adult sows are usually irritable and aggressive. Wild boar has territorial consciousness and may attack other creatures in the territory.

　　The reporter learned that there are only three hunting teams in Mianyang, a city with a good ecological environment and frequent wild boars, all of which are non-governmental organizations. Among them, only one team was allowed to use guns by the public security organs for the record.

　　How to find the balance between protection and hunting?

　　Experts interviewed said that the frequent appearance of wild animals such as wild boar not only caused crop losses, but also reflected the trend that the ecological environment in many places in China continued to improve and the habitat of wild animals expanded. "The ecology is getting better and better these years." Yang Tingxiu, a 50-year-old villager in Luoyigou Village, Qingxi Town, Qingchuan County, Sichuan Province, said that wild boar, deer and monkeys went to the fields to eat crops, which was the trouble after the ecological improvement.

　　Experts suggest that wild boar is harmful, but it is not a "pest". Studies have shown that the habit of wild boar turning over the soil and arching the ground can effectively promote the healthy succession of forests. At the same time, the seeds of many plants in nature are also spread through the eating and activities of wild boar.

　　The insiders believe that it is necessary to adhere to the principle of protection priority, find the balance between hunting and protection, and make scientific policies to achieve harmonious coexistence between man and nature. Otherwise, it is inevitable to fall into "indiscriminate killing — The number has dropped sharply — Protection — Overflow — The pattern of indiscriminate killing.

　　Some grassroots cadres and the masses have called for the local government to formulate special control methods in areas where wild boar causes frequent harm. For example, the public security organs can properly participate in wild boar hunting activities, or approve private professional hunting teams to be equipped with a certain number of special firearms. At the same time, strictly regulate and implement the harmless treatment process and comprehensive utilization regulations such as sterilization, deep burial or incineration of prey carcasses, and strictly prohibit wild animals from flowing to the table.

　　Experts warned that if Lu Yu wild boar, should keep calm, quickly find the surrounding terrain and shelter conducive to hiding. If the wild boar takes the initiative to attack, it should dodge to both sides to avoid the frontal collision of the wild boar; When you are deadlocked, try to find a tall and easy-to-climb tree to climb two or three meters, and call the police for help on the premise of your own safety.

[Keywords:] National People’s Congress

According to CCTV-13 news channel "Oriental Time and Space", there are still shortcomings and bottlenecks in many high-tech fields in China. Since last year, China Academy of Sciences has started three Class C pilot projects, such as computing system and network security, and organized the whole hospital to focus on solving the bottleneck problem of key core technologies in China, with the investment of each project exceeding 1 billion yuan. The person in charge of the project is required to issue a military order, which clarifies the "three noes" principle during the project operation period: no declaration of awards, no transfer of work, and no engagement in other projects.

Bai Chunli, deputy to the National People’s Congress and president of the China Academy of Sciences, said that the ZTE incident had a great shock to the whole society, such as sticking to key technologies, and high-end chips were on the one hand, because it imported more than oil for many years. Most of the high-end instruments and equipment we do scientific research are imported, but if we can’t import them, we will face a very embarrassing situation.

[Keywords:] warm news

According to CCTV-13 news channel "News Live Room", there are 137 million female employees in China, and they have made achievements in different positions. On March 7th, the All-China Federation of Trade Unions held the activity of "Taking a photo to pay tribute to women workers" at Beijing New Airport and Beijing City Sub-center.

At the construction site of Beijing New Airport of Beijing Company of China Construction Second Bureau, the female employees of 17 project departments enjoyed the free art photos taken by the trade union organizations at the construction site. The first time I took an artistic photo at the construction site, the makeup artist put blush on her face and lipstick on it. The sisters gathered around the makeup artist and felt the beauty after makeup. The photographer’s lens was fixed on their happy smiling faces.

[Keywords:] School Road

According to CCTV-13 news channel "Chao Wen Tian Xia", every year, when the school starts in spring, children who live in the village of Tashkurgan Tajik Autonomous County in Kashgar, Xinjiang, have to return to boarding schools in the county, which is a journey to be fully prepared psychologically and physically. Why? With an altitude of 5,000 meters, a low temperature of minus 17 degrees, the deepest snow can reach more than two meters, and it is often impossible to walk for a day, and you have to spend the night at a fellow villager’s house.

Snow and snow block the road, and the mountains and white snow stand in front of children and parents. This section of the road can only be walked out with their legs. It is normal to close the mountain with heavy snow, and it will keep falling. It is almost impossible to get through the road in advance, so we can only seize the time to do our homework once a few days before school starts and concentrate on escorting the children out of the mountain. The reporter cried when he walked this road. Only those who really walked on the Pamirs once could understand the feeling that their lungs were so tight that they could not breathe. In fact, the distance traveled by the reporter is only a few tenths of the way for Tajik children to go to school. The children have to walk this road twice a year. For children, although the road to school is difficult, it must be taken. This is a road to the future and hope.

Keywords: Foreign Minister’s Press Conference

According to the CCTV-13 news channel "News 30 Minutes", on the morning of the 8th, a press conference was held in the press center of the Second Session of the 13th National People’s Congress. State Councilor and Foreign Minister Wang Yi answered questions from Chinese and foreign journalists on "China’s foreign policy and foreign relations".

This year marks the 40th anniversary of the establishment of diplomatic relations between China and the United States. In this regard, Wang Yi said that over the past 40 years, Sino-US relations have gone through ups and downs, which has not only made historic progress, but also faced new challenges. Past experience boils down to one thing, that is, cooperation is beneficial to both sides, and fighting is harmful to both sides. Although great changes have taken place in today’s international situation and in China and the United States, this revelation is still the golden rule, which needs to be adhered to and maintained by both sides. The way forward has also been made clear, that is, to jointly promote Sino-US relations based on coordination, cooperation and stability. This is an important consensus reached by the heads of state of China and the United States, and it should also be the greatest common denominator of all walks of life in the two countries and the direction of joint efforts. It is hoped that the United States will abandon zero-sum thinking, move in line with China, form healthy competition in the process of deepening cooperation, and achieve mutual benefit and win-win while developing separately. (Editor in Charge/Jassamyn Liu)