Roborock (also known as Beijing Roborock Technology Co. Ltd. ; Chinese : 北京石頭世紀科技有限公司 ) is a Chinese consumer goods company known for its robotic sweeping and mopping devices and handheld cordless stick vacuums . Xiaomi played a key role in the company's founding.
135-572: Beijing Roborock Technology Co. Ltd. was founded in 2014 in Beijing , China. Its launch was largely supported by Xiaomi. The company raised about $ 640 million in its February 2020 IPO, and the company had annual revenue of approximately CNY 4.5 billion as of August 2021. Roborock currently trades on Beijing's STAR market. Newer models in Roborock's "S" line of robotic floor cleaning devices have an obstacle avoidance system which uses dual cameras and
270-641: A prefectural capital and during the Three Kingdoms period , it was held by Gongsun Zan and Yuan Shao before falling to the Wei Kingdom of Cao Cao . The AD third-century Western Jin demoted the town, placing the prefectural seat in neighboring Zhuozhou . During the Sixteen Kingdoms period when northern China was conquered and divided by the Wu Hu , Jicheng was briefly the capital of
405-471: A considerable portion for steel and cement making. Power plants in the coal-mining regions of Shanxi, Inner Mongolia and Shaanxi, where coal consumption has tripled since 2000, and Shandong also contribute to air pollution in Beijing. Shandong, Shanxi, Hebei and Inner Mongolia, respectively rank from first to fourth, among Chinese provinces by coal consumption. There were four major coal-fired power plants in
540-794: A decade, GERD stabilized at 2.07% of GDP in 2015. China devoted 5.1% of total research spending to basic research in 2015, according to the UNESCO Institute for Statistics. This is up from 4.8%, on average, over the past decade, but less than in 2004 (6.0%). The prolonged policy focus on experimental development has resulted in enterprises contributing three-quarters of Chinese research spending (77% of total expenditure on R&D in 2015). Enterprises focus on experimental development, which accounted for as much as 97% of their total research expenditure by 2015. Business enterprises contributed 60% of GERD in 2000 and 74% in 2008. In 2004, 74% of GERD went on experimental development. China aims to increase
675-466: A few localities, and poorly judged bureaucratic subsidizing of technologies that soon become out-dated. As of 2010, China's national R&D programmes encompassed the: The major national programs received 15-20% of government R&D spending in 2010. They funded research, after a stated competitive proposal procedure, in universities, institutes, and enterprise. Important project may receive funding from several programs. The programs have arguably had
810-419: A few pedestrians can pass through at a time. Once ubiquitous in Beijing, siheyuans and hutongs are rapidly disappearing, as entire city blocks of hutongs are replaced by high-rise buildings. Residents of the hutongs are entitled to live in the new buildings in apartments of at least the same size as their former residences. Many complain, however, that the traditional sense of community and street life of
945-422: A higher status occupation. Also, industrialized Shanghai which has done important educational reforms may not be representative for the rest of China. While there was no evidence of cheating or technical problems with the testing, Shanghai attracts many immigrants from the rest of China may have allowed particularly good students to study in the city. The OECD director of the testing, Andreas Schleicher , said that
1080-763: A large public gathering of Beijing residents against the Gang of Four and the Cultural Revolution in Tiananmen Square was forcefully suppressed . In October 1976, the Gang was arrested in Zhongnanhai and the Cultural Revolution came to an end. In December 1978, the Third Plenum of the 11th Party Congress in Beijing under the leadership of Deng Xiaoping reversed the verdicts against victims of
1215-476: A major center of electronics in China. In recent years, the expansion of Beijing has also brought to the forefront some problems of urbanization, such as heavy traffic , poor air quality , the loss of historic neighborhoods, and a significant influx of migrant workers from less-developed rural areas of the country. Beijing has also been the location of many significant events in recent Chinese history, principally
1350-413: A microprocessor to discern objects as small as 5 cm wide by 3 cm high. As the cleaners move about a space they create a schematic map, marking objects to be avoided later. Roborock has previously claimed that their floor cleaning devices do not store images or upload them to the cloud, and that all captured images are immediately deleted after processing. Roborock introduced ReactiveAI 2.0 with
1485-470: A pancake" ( tan da bing ). This pattern of development is frequently cited as a reason for Beijing's urban problems. Beijing has a monsoon-influenced humid continental climate ( Köppen : Dwa ), bordering on a cold semi-arid climate ( Köppen : BSk ) in the south and in the northwest, characterized by hot, humid summers due to the East Asian monsoon , and brief but cold, dry winters that reflect
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#17327824006071620-574: A period of 39 years. Also required was the execution or exile of government supporters of the Boxers and the destruction of Chinese forts and other defenses in much of northern China. Ten days after the treaty was signed the foreign armies left Beijing, although legation guards would remain there until World War II . With the treaty signed the Empress Dowager Cixi returned to Beijing from her "tour of inspection" on 7 January 1902 and
1755-692: A scholarly community with criticisms and progressive research. In the Chinese Confucian cultural ethos dating back to the Han dynasty , Confucian philosophers held a strong focus by placing an overemphasis on literature, the arts, and public administration, while scientific and technological pursuits were looked down upon in terms of prestige and respectability and regarded to be unworthy endeavors that were fell far beneath their social pay grade as such domains of inquiry were seen as trivial or restricted to limited practical applications. One contributing factor
1890-667: A series of central government initiatives designed to promote "indigenous innovation" and technological development more generally in China. These include the National Medium- and Long-Term Program for Science and Technology Development (2006–20), the Strategic Emerging Industries initiative, the Internet Plus initiative, and the Made in China 2025 Program, among others. Through these initiatives,
2025-490: A similar role to CAS for social sciences and philosophy. There are also many more narrow academies such as the Chinese Academy of Fishery Sciences . The National Natural Science Foundation of China (NSFC) gives grants to individual researchers after peer-review . The People's Liberation Army General Armaments Department directs military R&D. The national scientific and academic organizations affiliated to
2160-497: A single brushroll. Roborock S7 MaxV Ultra has 5,100Pa suction and a livestreaming camera. Roborock S7, which debuted at CES 2021, uses trademarked VibaRise. Roborock S7 can detect the type of floor to use either its mop or vacuum. The Roborock S6 MaxV operates at 67 dB and generates maximum suction of 2,500 Pa. Its dustbin measures 460 mL at full capacity. It can vacuum approximately 250 square meters between charges, and its mop can cover about 200 square meters of hard flooring on
2295-694: A southeasterly direction. The Miyun Reservoir, on the upper reaches of the Chaobai River, is the largest reservoir within the municipality. Beijing is also the northern terminus of the Grand Canal to Hangzhou , which was built over 1,400 years ago as a transportation route, and the South–North Water Transfer Project , constructed in the past decade to bring water from the Yangtze River basin. The urban area of Beijing, on
2430-540: A strong effect but have also been involved in scandals, corruption and fraud. They have been accused mainly of producing derivative works rather than driving innovation and it has been claimed that they ignore merit in selecting projects in favor of cronyism . China is trying to improve its efficiency through measures such as more peer-review and evaluations. In 2014, the China Integrated Circuit Industry Investment Fund
2565-426: A total of 600 million people. After this "pollution shock" air pollution became an important economic and social concern in China. After that the government of Beijing announced measures to reduce air pollution, for example by lowering the share of coal from 24% in 2012 to 10% in 2017, while the national government ordered heavily polluting vehicles to be removed from 2015 to 2017 and increased its efforts to transition
2700-555: Is "BJ". The earliest traces of human habitation in the Peking municipality were found in the caves of Dragon Bone Hill near the village of Zhoukoudian in Fangshan District , where Peking Man lived. Homo erectus fossils from the caves date to 230,000 to 250,000 years ago. Paleolithic Homo sapiens also lived there more recently, about 27,000 years ago. Archaeologists have found neolithic settlements throughout
2835-728: Is 27.2 °C (81.0 °F). Precipitation averages around 528.0 mm (20.8 in) annually ( Haidian and Chaoyang has an average annual precipitation of 584.2 mm (23.0 in)), with close to three-quarters of that total falling from June to August. With monthly percent possible sunshine ranging from 42% in July to 62% in January and February, the city receives 2,490.5 hours of bright sunshine annually. Extremes since 1951 have ranged from −27.4 °C (−17.3 °F) on 22 February 1966 to 41.9 °C (107.4 °F) on 24 July 1999 (unofficial record of 42.6 °C (108.7 °F)
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#17327824006072970-747: Is an alliance of nine elite Chinese universities which receive a high amount of national research funding and produce a large share of national research output. Chinese universities contribute an unusually large share of patents. The universities receive about half of R&D money from private enterprises. Eight out of nine members of the Politburo Standing Committee of the Chinese Communist Party (CCP) have engineering degrees, including CCP general secretary Hu Jintao . 2.25 million students have studied abroad since 1978. 340,000 were studying abroad in 2011 which
3105-434: Is believed to be the imperial examination system, which deprived the incentives that encouraged up-and-coming Chinese intellectuals to actively engage in scientific and technological endeavors. The absence of motivating factors rooted in the imperial examinations stifled the development of scientific and technological innovation and resulted in a stagnation of Chinese scientific and technological creativity and development over
3240-447: Is causing harm and danger to the population. The air pollution does directly result in significant impact on the morbidity rate of cardiovascular disease and respiratory disease in Beijing. Exposure to large concentrations of polluted air can cause respiratory and cardiovascular problems, emergency room visits, and even death. Dust from the erosion of deserts in northern and northwestern China results in seasonal dust storms that plague
3375-515: Is famous for its siheyuans , a type of residence where a common courtyard is shared by the surrounding buildings. Among the more grand examples are the Prince Gong Mansion and Residence of Soong Ching-ling . These courtyards are usually connected by alleys called hutongs . The hutongs are generally straight and run east to west so that doorways face north and south for good Feng Shui . They vary in width; some are so narrow only
3510-496: Is greatly respected and feared has been argued to stifle creative debate. China in a 2006 report outlined policies for improving innovation. They include 20 large megaprojects in areas such as nanotechnology, high-end generic microchips, aircraft, biotechnology, and new drugs. This is combined with a more bottom-up approach on a Silicon Valley model consisting of small start-ups, venture capital , and cooperation between industry and universities. It has also been argued that China
3645-456: Is no longer the common name for the city, some of the city's older locations and facilities, such as Beijing Capital International Airport , with the IATA code PEK, and Peking University , still retain the former romanization. The single Chinese character abbreviation for Beijing is 京 , which appears on automobile license plates in the city. The official Latin alphabet abbreviation for Beijing
3780-677: Is still low compared to major developed nations like the United States and Japan but the gap is rapidly closing. The number of doctorate awards in science and engineering have increased tenfold since the early 1990s. The number of students in general at universities increased from 1 million to 5.4 million during the 1998-2007 period. In 2009 alone, China produced over 10,000 PhD engineering graduates, and as many as 500,000 BSc graduates in engineering, mathematics, information technology, and computer science – more than any other country. The C9 League , pitched as China's Ivy League ,
3915-706: Is the case for other diasporas and their homelands, have played a substantial role in contributing to China's scientific and technological development. The Chinese diaspora have been seen as a key conduit for channelling and facilitating expertise, investment, trade, and modern technology transfers to the country through their engagement in both commercial activities and public non-profit cooperation. By using 'Brain Gain' to attract highly educated overseas Chinese to return to China to work, China has made significant improvements in its innovation ecosystem although there are some limitations to how sustainable this technique may be. One of
4050-459: Is the most prestigious professional science organization in China with China's scientific elite being members. It directs many research institutes, research programs, graduate training programs, and gives influential advice. The Chinese Academy of Engineering (CAE) gives important advice but unlike the CAS does not have research institutes of its own. The Chinese Academy of Social Sciences (CASS) has
4185-577: Is the world leader in making small, innovative improvements to existing designs. One example is continual improvements to the design of power supplies making them gradually smaller, less expensive, and more energy efficient. This may not create completely new products or create headlines but may be more important for creating employment. A 2016 NBER paper found that the Chinese economy is becoming increasingly innovative. The study found that rising labor costs in China and "expanded market opportunities in
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4320-538: Is the world's most populous national capital city as well as China's second largest city after Shanghai . It is located in Northern China , and is governed as a municipality under the direct administration of the State Council with 16 urban, suburban, and rural districts . Beijing is mostly surrounded by Hebei Province and neighbors Tianjin to the southeast; together, the three divisions form
4455-462: The APEC China 2014 and the 2015 China Victory Day Parade , respectively. During and prior to these events, Beijing's air quality improved dramatically, only to fall back to unhealthy levels shortly after. On 8 and 9 December 2015 Beijing had its first smog alert which shut down a majority of the industry and other commercial businesses in the city. Later in the month another smog "red alert"
4590-946: The China Association for Science and Technology are also important forces in scientific and technological research. The Society of Chinese Scientific Journalism presides over the Society of Chinese Technical Communication, China's first government approved technical communication association. Since 2002, the group has held annual conferences. Research is carried out by governmental research institutes, in higher learning institutions, and by private enterprises. Local governments have become increasingly important in R&;D funding and may now contribute up to half of government spending. Intense rivalry for research and high-tech industry has been argued to sometimes create wasteful subsidized overcapacity, dispersal of efforts better centralized in
4725-664: The Chinese Academy of Social Sciences , the Central Academy of Fine Arts , the Central Academy of Drama , the Central Conservatory of Music , and the Red Cross Society of China . Over the past 3,000 years, the city of Beijing has had numerous other names . The name Beijing , which means "Northern Capital" (from the Chinese characters 北 běi for north and 京 jīng for capital ),
4860-605: The Chinese Communist Party (CCP), led by the Beijing CCP Secretary . The Municipal CCP Committee issues administrative orders, collects taxes, manages the economy, and directs a standing committee of the Municipal People's Congress in making policy decisions and overseeing the local government. Since 1987, all CCP Secretary of Beijing is also a member of the Politburo . Government officials include
4995-660: The Convention of Peking ending that war, Western powers for the first time secured the right to establish permanent diplomatic presences within the city. From 14 to 15 August 1900 the Battle of Peking was fought. This battle was part of the Boxer Rebellion . The attempt by the Boxers to eradicate this presence, as well as Chinese Christian converts, led to Beijing's reoccupation by eight foreign powers . During
5130-661: The Global Innovation Index in 2022, China was considered one of the most competitive in the world, ranking eleventh in the world, third in the Asia & Oceania region, and second for countries with a population of over 100 million. In 2024, China is still ranked 11th. China was a global scientific and technological leader up until the early years of the Ming dynasty . Ancient and medieval Chinese discoveries and Chinese innovations such as papermaking , printing ,
5265-463: The Great Wall and the Grand Canal —all of which are popular tourist locations. Siheyuans , the city's traditional housing style, and hutongs , the narrow alleys between siheyuans, are major tourist attractions and are common in urban Beijing. Beijing's public universities make up more than one-fifth of Double First-Class Construction universities, and many of them consistently rank among
5400-687: The International Mathematical Olympiad , the International Physics Olympiad and the International Chemistry Olympiad . China's rank based on number of Gold Medals in last 10 years(2014-2023): China has become one of the world's biggest sources for research and development personnel. Between 2000 and 2008, the number of engineers and scientists more than doubled to 1.59 million. Relative to population size this
5535-524: The Jing-Jin-Ji cluster . It is ranked as the 10th most important city in the world by Knight Frank . Beijing is a global city and one of the world's leading centres for culture , diplomacy , politics , finance , business and economics , education , research , language , tourism , media , sport , science and technology and transportation and art. It is home to the headquarters of most of China's largest state-owned companies and houses
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5670-660: The National Natural Science Foundation of China participated in many cooperative international organizations. Chinese researchers held 281 leading posts on international organizations' expert committees and held 293 executive member-director or higher level positions. In the early 1980s foreign companies began transferring technology by licensing agreements and sales of equipment. Later in the 1980s many multinational corporations started transferring technology by entering into joint ventures with Chinese companies in order to expand in China. China in
5805-617: The Qing dynasty as a direct successor of the Ming (delegitimising Li Zicheng and his followers) and Beijing became China's sole capital. The Qing emperors made some modifications to the Imperial residence but, in large part, the Ming buildings and the general layout remained unchanged. Facilities for Manchu worship were introduced, but the Qing also continued the traditional state rituals. Signage
5940-748: The Self-Strengthening Movement . After the Communist victory in 1949 science and technology research was organized based on the model of the Soviet Union . It was characterized by a bureaucratic organization led by non-scientists, research according to the goals of central plans, separation of research from production, specialized research institutes, concentration on practical applications, and restrictions on information flows. Researchers should work as collectives for society rather than as individuals seeking recognition. Many studied in
6075-534: The Temple of Heaven . Next, there is what is sometimes referred to as the "Sino-Sov" style, with structures tending to be boxy and sometimes poorly constructed, which were built between the 1950s and the 1970s. Finally, there are much more modern architectural forms, most noticeably in the area of the Beijing CBD in east Beijing such as the new CCTV Headquarters , in addition to buildings in other locations around
6210-533: The Tiananmen Square protests of 1989 . The city has also hosted major international events, including the 2008 Summer Olympics and the 2015 World Championships in Athletics , and the 2022 Winter Olympics , making it the first city to ever host both Winter and Summer Olympics. Beijing is situated at the northern tip of the roughly triangular North China Plain , which opens to the south and east of
6345-673: The Xianbei Former Yan Kingdom. After China was reunified by the Sui dynasty in 581, Jicheng, also known as Zhuojun , became the northern terminus of the Grand Canal . Under the Tang dynasty , Jicheng as Youzhou , served as a military frontier command center. During the An-Shi Rebellion and again amidst the turmoil of the late Tang, local military commanders founded their own short-lived Yan dynasties and called
6480-680: The compass , and gunpowder (the Four Great Inventions ) contributed to the economic development of ancient and medieval East Asia, the Middle East and Europe. Chinese scientific activity began to neuter and wane around the fourteenth century. Unlike in Europe and other parts of the Western World , Western engineers and scientists did not attempt to reduce observations of nature to mathematical laws and nor did they not form
6615-451: The hutongs cannot be replaced, and these properties are often government owned. Beijing had a long history of environmental problems . Between 2000 and 2009 Beijing's urban extent quadrupled, which not only strongly increased the extent of anthropogenic emissions, but also changed the meteorological situation fundamentally, even if emissions of human society are not included. For example, surface albedo , wind speed and humidity near
6750-583: The mass media , should actively promote respect for knowledge and human talents. Since the 1990s, China has concentrated on building physical infrastructure such as roads and ports. During the 2010s, a policy was implemented requiring technology transfer as a condition for foreign companies wanting entry into the Chinese market. However, China has shifted its growing focus towards prioritizing indigenous innovation to meet its national scientific and technological requirements. During this period China has succeeded in developing an innovation infrastructure, founded on
6885-561: The mayor ( Chinese : 市长 ) and vice-mayor. Numerous bureaus focus on law, public security, and other affairs. Additionally, as the capital of China, Beijing houses all of the important national governmental and political institutions, including the National People's Congress . Science and technology in the People%27s Republic of China Science and technology in China have developed rapidly since
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#17327824006077020-715: The oldest surviving pagodas in Beijing date to the Liao period, including the Tianning Pagoda . The Liao fell to the Jurchen Jin dynasty in 1122, which gave the city to the Song dynasty and then retook it in 1125 during its conquest of northern China . In 1153, the Jurchen Jin made Beijing their "Central Capital", or Zhongdu . The city was besieged by Genghis Khan 's invading Mongolian army in 1213 and razed to
7155-507: The 15th, 16th, 17th, and 18th centuries. The first known church was constructed by Catholics in 1652 at the former site of Matteo Ricci 's chapel; the modern Nantang Cathedral was later built upon the same site. The capture of Beijing by Li Zicheng 's peasant army in 1644 ended the dynasty, but he and his Shun court abandoned the city without a fight when the Manchu army of Prince Dorgon arrived 40 days later. Dorgon established
7290-455: The 1980s to the 2020s, with major scientific and technological progress over the last four decades. From the 1980s to the 1990s, the Chinese government successively launched the 863 Program and the "Strategy for Rejuvenating the Country through Science and Education", which greatly promoted the development of China's science and technological institutions. Governmental focus on prioritizing
7425-811: The 1990s introduced increasingly sophisticated regulations of foreign investment by which access to the Chinese market was traded for technology transfer. The entry of China into the World Trade Organization in 2001 required this practice stop but critics argue that it continues. Chinese critics have argued such technology transfer may be useful for catching up but does not create new, cutting-edge technologies. China has increasingly encouraged multinational corporations to create R&D centers in China. Chinese critics have argued that foreign owned R&D mainly benefits foreign companies and removes many talented Chinese researchers from indigenous companies and institutions. Chinese supporters have argued that
7560-406: The Beijing area. Beijing's annual average concentration of major airborne fine particulate matter, or PM2.5, declined to 30 micrograms per cubic meter in 2022, the best air quality for the city since 2013. Due to Beijing's high level of air pollution, there are various readings by different sources on the subject. Daily pollution readings at 27 monitoring stations around the city are reported on
7695-450: The Chinese market as well as it being essential for maintaining global competitiveness to make use the many available Chinese engineers and scientists. China is now ranked first when multinational corporations are asked in which nation future R&D centers are most likely to be located. A 2005 report found serious shortcomings to China's national innovation system. There were problems with services to help turn S&T work into results and
7830-432: The Chinese state has intervened in the economy in a variety of ways to promote national technological development and reduce reliance on other countries. Prioritized industries and firms are protected and guided. There are systematic efforts to replace foreign technology and intellectual properties with indigenous technology. Foreign companies are given many incentives for technology transfer and for moving R&D to China. At
7965-511: The Cultural Revolution and instituted the "policy of reform and opening up". Since the early 1980s, the urban area of Beijing has expanded greatly with the completion of the 2nd Ring Road in 1981 and the subsequent addition of the 3rd , 4th , 5th and 6th Ring Roads . According to one 2005 newspaper report, the size of newly developed Beijing was one-and-a-half times larger than before. Wangfujing and Xidan have developed into flourishing shopping districts, while Zhongguancun has become
8100-520: The Ming capital Yingtian (modern Nanjing ) alienated many there, he established his fief as a new co-capital. The city of Beiping became Beijing ("Northern Capital") or Shuntian in 1403. The construction of the new imperial residence, the Forbidden City , took from 1406 to 1420; this period was also responsible for several other of the modern city's major attractions, such as the Temple of Heaven and Tian'anmen . On 28 October 1420,
8235-699: The People's Republic of China oversees education as well as research institutes at universities. Several other ministries such as the Ministry of Industry and Information Technology of the People's Republic of China , the Ministry of Health of the People's Republic of China , and the Ministry of Agriculture of the People's Republic of China are also involved in S&;T. The National Planning Office of Philosophy and Social Sciences directs planning for social sciences and philosophy. The Chinese Academy of Sciences (CAS)
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#17327824006078370-405: The RockDock Ultra, the most advanced dock Roborock offers. In addition to emptying the S8's dustbin and charging the robot, the dock also manages the S8's mopping system including refilling its water and drying its mop pad. The S8 Pro Ultra is the first Roborock robot vacuum with lifting dual brushrolls. The S8 and S8 Plus have dual brushrolls but they do not lift. All models which precede the S8 have
8505-409: The Soviet Union which also transferred technology. China began a formal computing development program in 1956 when it launched the Twelve-Year Science Plan and formed the Beijing Institute of Computing Technology under the Chinese Academy of Sciences . Beginning in 1964, China through the Third Front construction built a self-sufficient industrial base in its hinterlands as a strategic reserve in
8640-545: The Third Front region gradually declined. Rapprochement between the United States and China decreased the fear of invasion which motivated the Third Front construction. Through its distribution of infrastructure, industry, and human capital around the country, the Third Front created favorable conditions for subsequent market development and private enterprise. The Cultural Revolution (1966-1976), which sought to remove perceived bourgeois influences and attitudes, caused large negative effects and disruptions. Construction of
8775-418: The Third Front slowed during its early stages. Among other measures it saw the scientific community and formal education attacked, intellectuals were sent to do manual labor, universities and academic journals were closed, most research ceased, and for nearly a decade China trained no new scientists and engineers. In 1966, China transitioned from vacuum-tube computers to fully transistorized computers . In
8910-633: The United States due to visa restrictions, fear of lack of job opportunities, and belief that US growth will lag behind average world growth rates. 52% believed that the best job opportunities were in China which was in marked contrast with earlier surveys. 74% felt that the best days of China's economy was coming. 68% intended to start businesses. When they return, foreign educated students often provide crucial science and technology knowledge, management skills, and innovation abilities for scientific research and industry. The senior management in high-tech companies are often foreign educated. Overseas Chinese , as
9045-455: The advancement of science and technology in China is evident in its allocation of funds, investment in research, reform measures, and enhanced societal recognition of these fields. These actions undertaken by the Chinese government are seen as crucial foundations for bolstering the nation's socioeconomic competitiveness and development, projecting its geopolitical influence, and elevating its national prestige and international reputation. As per
9180-549: The allocation of national funding to support S&T was far from optimal. Sometimes researchers became short-sighted if they get too close to the market. Another serious problem was that companies facing severe competition looked first to purchase foreign technology rather than investing in developing technology and technology development capacity at home in China. Many of the patent applications came from medium-sized enterprises (70%) since small enterprises invest little in research. China's hierarchical, top-down society where authority
9315-432: The best in the Asia-Pacific and the world. Beijing is home to universities, including Tsinghua University and Peking University . Beijing CBD is a center for Beijing's economic expansion , with the ongoing or recently completed construction of multiple skyscrapers . Beijing's Zhongguancun area is a world leading center of scientific and technological innovation as well as entrepreneurship. Beijing has been ranked
9450-402: The capital to Nanjing . After the Qing general Yuan Shikai forced the abdication of the last Qing emperor and ensured the success of the revolution, the revolutionaries accepted him as president of the new Republic of China . Yuan maintained his capital at Beijing and quickly consolidated power, declaring himself emperor in 1915. His death less than a year later left China under the control of
9585-429: The center of Beijing, directly to the south of the Forbidden City , the former residence of the emperors of China. To the west of Tian'anmen is Zhongnanhai , the residence of China's current leaders. Chang'an Avenue , which cuts between Tiananmen and the Square, forms the city's main east–west axis. Beijing's pattern of development from the old inner city to its urban fringe are frequently described as "spreading like
9720-759: The city Yanjing , or the "Yan Capital." Also in the Tang dynasty, the city's name Jicheng was replaced by Youzhou or Yanjing. In 938, after the fall of the Tang, the Later Jin ceded the frontier territory including what is now Beijing to the Khitan Liao dynasty, which treated the city as Nanjing , or the "Southern Capital", one of four secondary capitals to complement its "Supreme Capital" Shangjing (modern Baarin Left Banner in Inner Mongolia ). Some of
9855-443: The city burned 26.3 million tons of coal, 73% of which for heating and power generation and the remainder for industry. Much of the city's air pollutants are emitted by neighboring regions. Coal consumption in neighboring Tianjin is expected to increase from 48 to 63 million tons from 2011 to 2015. Hebei Province burned over 300 million tons of coal in 2011, more than all of Germany, of which only 30% were used for power generation and
9990-754: The city such as the Beijing National Stadium and National Center for the Performing Arts . Since 2007, buildings in Beijing have received the CTBUH Skyscraper Award for best overall tall building twice, for the Linked Hybrid building in 2009 and the CCTV Headquarters in 2013. The CTBUH Skyscraper award for best tall overall building is given to only one building around the world every year. In
10125-502: The city to provide electricity as well as heating during the winter. The first one (Gaojing Thermal Power Plant) was shut down in 2014. Another two were shut in March 2015. The last one (Huaneng Thermal Power Plant) would be shut in 2016. Between 2013 and 2017, the city planned to reduce 13 million tons of coal consumption and cap coal consumption to 15 million tons in 2015. The government sometimes uses cloud-seeding measures to increase
10260-532: The city was officially designated the capital of the Ming dynasty in the same year that the Forbidden City was completed. Beijing became the empire's primary capital, and Yingtian, also called Nanjing ("Southern Capital"), became the co-capital. (A 1425 order by Zhu Di's son, the Hongxi Emperor , to return the primary capital to Nanjing was never carried out: he died, probably of a heart attack,
10395-707: The city with the largest scientific research output by the Nature Index since the list's inception in 2016. Beijing hosts 176 foreign embassies as well as the headquarters of many organizations, including the Asian Infrastructure Investment Bank (AIIB), the Shanghai Cooperation Organisation (SCO), the Silk Road Fund , the Chinese Academy of Sciences , the Chinese Academy of Engineering ,
10530-556: The city. Mountains to the north, northwest and west shield the city and northern China's agricultural heartland from the encroaching desert steppes. The northwestern part of the municipality, especially Yanqing District and Huairou District , are dominated by the Jundu Mountains , while the western part is framed by Xishan or the Western Hills . The Great Wall of China across the northern part of Beijing Municipality
10665-605: The city. The Marco Polo Bridge Incident triggered the Second Sino-Japanese War , World War II as it is known in China. During the war, Beijing fell to Japan on 29 July 1937 and was made the seat of the Provisional Government of the Republic of China , a puppet state that ruled the ethnic-Chinese portions of Japanese-occupied northern China . This government was later merged into
10800-586: The city; the Beijing Weather Modification Office sometimes artificially induces rainfall to fight such storms and mitigate their effects. In the first four months of 2006 alone, there were no fewer than eight such storms. In April 2002, one dust storm alone dumped nearly 50,000 tons of dust onto the city before moving on to Japan and Korea. The municipal government is regulated by the Municipal Committee of
10935-455: The coming decades. It described S&T as the chief productive force and affecting economic development, social progress, national strength, and living standards. S&T should become closely associated with market needs. Not only Soviet style institutes should do research but also universities and private industries. State institutions should form joint ventures with Chinese or foreign venture capital in order for S&T developments to reach
11070-661: The construction of the Beijing Subway and the 2nd Ring Road . During the Cultural Revolution from 1966 to 1976, the Red Guard movement began in Beijing and the city's government fell victim to one of the first purges. By the autumn of 1966, all city schools were shut down and over a million Red Guards from across the country gathered in Beijing for eight rallies in Tian'anmen Square with Mao. In April 1976,
11205-438: The country was on track to meet its target. The research firm Battelle estimates that China's GERD will exceed that of the United States by 2023. However, several convergent factors cast doubt over the accuracy of Battelle's prediction: the deceleration in China's rate of economic growth in 2014, the considerable drop in industrial production since 2012 and the major stock market slide in mid-2015. After progressing rapidly for
11340-520: The device may vacuum but not mop. Roborock Q7 Max, released in 2022, generates 4,200 Pa suction, and can be controlled by Alexa , Siri , or Google Assistant . In 2023, Roborock released the S8, S8 Plus and S8 Pro Ultra. The main difference between the models is the docking station each includes. The S8 has a standard charging base whereas the S8 Plus includes an Auto-Empty Dock. The S8 Pro Ultra ships with
11475-450: The early 21st century, Beijing has witnessed tremendous growth of new building constructions, exhibiting various modern styles from international designers, most pronounced in the CBD region. A mixture of both 1950s design and neofuturistic style of architecture can be seen at the 798 Art Zone , which mixes the old with the new. Beijing's tallest building is the 528-meter China Zun . Beijing
11610-493: The energy system to clean sources. Joint research between American and Chinese researchers in 2006 concluded that much of the city's pollution comes from surrounding cities and provinces. On average 35–60% of the ozone can be traced to sources outside the city. Shandong Province and Tianjin Municipality have a "significant influence on Beijing's air quality", partly due to the prevailing south/southeasterly flow during
11745-483: The establishment of over 100 science and technology parks in many parts of the country, along with encouragement of entrepreneurship outside the state-owned sector. Yip and McKern argue that Chinese firms have evolved through three phases as their innovation capabilities have matured and that by 2017 many of them are of world standard. They are now strong competitors in the China market and increasingly in foreign markets, where they are establishing local operations. While
11880-561: The event of war with the Soviet Union or the United States. The Third Front construction was primarily carried out in secret, with the location for Third Front projects following the principle of “close to the mountains, dispersed, and hidden” ( 靠山, 分散, 隐蔽 ; kàoshān, fēnsàn, yǐnbì ). From 1964-1974, China invested more than 40% of its industrial capacity in Third Front regions. After Nixon's China trip in 1972, investment to
12015-558: The fighting, several important structures were destroyed, including the Hanlin Academy and the (new) Summer Palace . A peace agreement was concluded between the Eight-Nation Alliance and representatives of the Chinese government Li Hongzhang and Yikuang on 7 September 1901. The treaty required China to pay an indemnity of US$ 335 million (over US$ 4 billion in current dollars) plus interest over
12150-492: The first city ever to host both the Summer and Winter Olympics , and also the Summer and Winter Paralympics . Beijing combines both modern and traditional style architectures , with one side of the city being modernized and renovated to fit the times, and the other half still offering traditional hutong districts. Beijing is one of the oldest cities in the world , with a rich history dating back over three millennia. As
12285-572: The first participation of Chinese student in an international student assessment test, the 2009 Programme for International Student Assessment , 15-year-old students from Shanghai ranked first in all of the three categories: mathematics, science, and reading. The Chinese students scored particularly well compared to other nations in mathematics. One explanation for the Chinese results may be a culture emphasizing education and competitive examinations and more time spent studying in part due to less participation in activities such as sports. Teaching has become
12420-473: The foreign R&D serves as a role model and encouragement for indigenous companies and creates skilled communities from which labor and knowledge can easily flow to indigenous companies. In 2010 there were 1,200 such R&D centers and 400 out the Fortune 500 corporations had created such R&D centers. Corporations have argued that this is a necessity in order to adapt products for the local requirements of
12555-585: The ground two years later. Two generations later, Kublai Khan ordered the construction of Dadu (or Daidu to the Mongols, commonly known as Khanbaliq ), a new capital for his Yuan dynasty to the northeast of the Zhongdu ruins. The construction took from 1264 to 1293, but greatly enhanced the status of a city on the northern fringe of China proper . The city was centered on the Drum Tower slightly to
12690-637: The industry. S&T personal should become more occupationally mobile, pay should be linked to economic results, and age and seniority should become less important for personal decisions. Intellectual property rights should be respected. Information exchange should improve and there should be competition and open bidding on projects. The environment should be protected. Chinese indigenous S&T in certain key areas should be especially promoted. Public officials should improve their understanding of S&T and incorporate S&T in decision making. Society, including Communist Party youth organizations, labor unions and
12825-723: The influence of the vast Siberian anticyclone . Spring can bear witness to sandstorms blowing in from the Gobi Desert across the Mongolian steppe , accompanied by rapidly warming, but generally dry, conditions. Autumn, similar to spring, is a season of transition and minimal precipitation. From 2001 to 2024, the hottest period in Beijing is early August, and the coldest period is late January. According to China's seasonal division standard, Beijing enters spring on 26 March, summer on 20 May, autumn on 13 September, and winter on 31 October. The average annual temperature in
12960-641: The larger Wang Jingwei government based in Nanjing. In the final phases of the Chinese Civil War , the People's Liberation Army seized control of the city peacefully on 31 January 1949 in the course of the Pingjin Campaign . On 1 October that year, Mao Zedong announced the creation of the People's Republic of China from atop Tian'anmen . He restored the name of the city, as
13095-527: The largest fleets in the world. Beijing became the first city in China to require the Chinese equivalent to the Euro 4 emission standard . Coal burning accounts for about 40% of the PM 2.5 in Beijing and is also the chief source of nitrogen and sulphur dioxide. Since 2012, the city has been converting coal-fired power stations to burn natural gas and aims to cap annual coal consumption at 20 million tons. In 2011,
13230-569: The largest number of Fortune Global 500 companies in the world, as well as the world's four biggest financial institutions by total assets. It is also a major hub for the national highway , expressway , railway , and high-speed rail networks. For a decade before the COVID-19 pandemic , the Beijing Capital International Airport was Asia's busiest airport (2009–2019) and the second busiest airport in
13365-487: The last of the Four Great Ancient Capitals of China , Beijing has been the political center of the country for most of the past eight centuries, and was the largest city in the world by population for much of the second millennium CE . With mountains surrounding the inland city on three sides, in addition to the old inner and outer city walls , Beijing was strategically poised and developed to be
13500-458: The last several centuries. By the 17th century, Europe and the Western world surpassed China in scientific and technological advancement. The causes of this early modern Great Divergence continue to be debated by scholars to this day. After being defeated repeatedly by Japan and Western nations in the 19th century, Chinese reformers began promoting modern science and technology as part of
13635-462: The likelihood of rain showers in the region to clear the air prior to large events, such as prior to the 60th anniversary parade in 2009 as well as to combat drought conditions in the area. More recently, however, the government has increased its usage of such measures as closing factories temporarily and implementing greater restrictions for cars on the road, as in the case of " APEC blue " and "parade blue", short periods during and immediately preceding
13770-552: The mid-1960s through the late 1960s, China began a semiconductor program and was producing third-generation computers by 1972. After Mao Zedong 's death, S&T was established as one of the Four Modernizations in 1976. The new leader Deng Xiaoping , and architect of the Chinese economic reform , was a strong promoter of S&T and reversed the policies of the Cultural revolution. The Soviet inspired system
13905-578: The municipality, including in Wangfujing , located in central Peking. The first walled city in Beijing was Jicheng , the capital city of the state of Ji which was built in 1045 BC. Within modern Beijing, Jicheng was located around the present Guang'anmen area in the south of Xicheng District . This settlement was later conquered by the state of Yan and made its capital. After the First Emperor unified China in 221 BC, Jicheng became
14040-623: The national policy. Efficiency of overall coordination has been questioned with various agencies seen as having overlapping missions and rivalries for resources and sometimes engaging in wasteful duplication. The Ministry of Science and Technology of the People's Republic of China , formerly the State Science and Technology Commission, is the body primarily responsible for science and technology strategy and policy. It also administers national research programs, S&T development zones, and international cooperation. The Ministry of Education of
14175-477: The new capital, to Beijing, a decision that had been reached by the Chinese People's Political Consultative Conference just a few days earlier. In the 1950s, the city began to expand beyond the old walled city and its surrounding neighborhoods, with heavy industries in the west and residential neighborhoods in the north . Many areas of the Beijing city wall were torn down in the 1960s to make way for
14310-415: The next month. He was buried, like almost every Ming emperor to follow him, in an elaborate necropolis to Beijing's north.) By the 15th century, Beijing had essentially taken its current shape. The Ming city wall continued to serve until modern times, when it was pulled down and the 2nd Ring Road was built in its place. It is generally believed that Beijing was the largest city in the world for most of
14445-503: The next three years. Other reports stated that the Chinese government would be increasing subsidies for tech firms. In its Medium and Long-Term Plan for the Development of Science and Technology (2006–2020), China fixed itself the target of devoting 2.5% of GDP to research and development by 2020. Between 2003 and 2012, gross domestic expenditure on research and development (GERD) rose from 1.13% to 1.98% of GDP, suggesting that
14580-609: The north of modern Beijing and stretched from the present-day Chang'an Avenue to the northern part of Line 10 subway . Remnants of the Yuan rammed earth wall still stand and are known as the Tucheng. In 1368, soon after declaring the new Hongwu era of the Ming dynasty , the rebel leader Zhu Yuanzhang captured Dadu/Khanbaliq and razed the Yuan palaces to the ground. Since the Yuan continued to occupy Shangdu and Mongolia , Dadu
14715-783: The objectives of Chinese intelligence activity abroad is alleged to be industrial espionage as well gaining military technology . Also private companies have been accused of espionage. Intelligence agencies suspect that thousands of Western companies may have been affected by data breaches that can be traced back to China. The China Internet Information Center stated in a 2005 article that China had inter-governmental cooperative S&T agreements with 96 nations, cooperative S&T programs with 152 nations and regions, and participated in more than 1,000 international S&T cooperative organizations. NGO international exchanges and cooperative activities had increased. The China Association for Science and Technology and related organizations as well as
14850-471: The plains in the south-central of the municipality with elevation of 40 to 60 metres (130–200 feet), occupies a relatively small but expanding portion of the municipality's area. The city spreads out in concentric ring roads . The Second Ring Road traces the old city walls and the Sixth Ring Road connects satellite towns in the surrounding suburbs. Tian'anmen and Tian'anmen Square are at
14985-752: The rankings in reading, mathematics and science and China's school children are now the smartest in the world. Chinese high school students won multiple gold medals every year consistently at many International Science Olympiad Competitions like the International Biology Olympiad , the International Olympiad on Astronomy and Astrophysics , the International Olympiad in Informatics , the International Earth Science Olympiad ,
15120-425: The regime as Marxism loses influence. Some science and technology mega-projects has been seen as questionable trophy projects done for propaganda purposes with Chinese state-controlled media being filled with reports of Chinese achievements. In 2019, reports surfaced stating that the Chinese government has ordered all foreign PC hardware and operating systems that are installed in government offices to be replaced in
15255-500: The release of the Roborock S7 MaxV. It has an RGB camera and 3D structured light scanning with a new neural processor for improved object recognition regardless of lighting conditions. In addition to their front-mounted cameras, newer Roborock floor cleaning devices use top-mounted LIDAR to map rooms. Using an app, users can set off-limits areas to ensure the device does not clean there. Users can also set "no-mop" areas where
15390-596: The residence of the emperor and thus was the perfect location for the imperial capital. The city is renowned for its opulent palaces, temples, parks, gardens, tombs, walls and gates . Beijing is one of the most important tourist destinations in the world. In 2018, Beijing was the second highest earning tourist city in the world after Shanghai . Beijing is home to many national monuments and museums and has eight UNESCO World Heritage Sites —the Forbidden City , Temple of Heaven , Summer Palace , Ming Tombs , Zhoukoudian Peking Man Site , Beijing Central Axis and parts of
15525-898: The results were expected to produce astonishment and had been examined for accuracy by international experts after the OECD received the Shanghai scores. He also said that the results "refute the commonly held hypothesis that China just produces rote learning" and "Large fractions of these students demonstrate their ability to extrapolate from what they know and apply their knowledge very creatively in novel situations". He believes that China has moved away from learning by rote. According to Schleicher, Russia performs well in rote-based assessments, but not in PISA, whereas China does well in both rote-based and broader assessments. In 2018 four major regions ( Beijing , Shanghai , Jiangsu and Zhejiang ) in China topped
15660-536: The rule of the Qing dynasty over China was restored, albeit much weakened by the defeat it had suffered in the Boxer Rebellion and by the indemnity and stipulations of the peace treaty. The Dowager died in 1908 and the dynasty imploded in 1911. The fomenters of the Xinhai Revolution of 1911 sought to replace Qing rule with a republic and leaders like Sun Yat-sen originally intended to return
15795-556: The same charge. The Roborock S4 does not mop. In 2022, Roborock released the Q5 which replaces the S models, and is similar to the S4 Max and the S5. The Q5 has a higher suction power but lacks the mop feature. Beijing This is an accepted version of this page Beijing , previously romanized as Peking , is the capital city of China . With more than 22 million residents, it
15930-431: The same time the technological abilities of domestic companies are supported in various ways. Such policies have generated considerable conflict between China and developed countries, particularly the United States, although China has often proven flexible when its policies have been challenged. Nationalism and nationalistic achievements have been seen as becoming the main ideological justifications and societal glue for
16065-436: The share of basic research to 15% of total research spending by 2020. The State Council of the People's Republic of China is the top administrative organ in China. Immediately below it are several ministries and ministry level organisations involved with various aspects of science and technology. The State Council Science and Education Leading Group, consisting of the leaders of the major science bodies, attempts to organize
16200-793: The summer and the mountains to the north and northwest. In preparation for the 2008 Summer Olympics and to fulfill promises to clean up the city's air, nearly US$ 17 billion was spent. Beijing implemented a number of air improvement schemes for the duration of the Games, including halting work at all construction sites, closing many factories in Beijing permanently, temporarily shutting industry in neighboring regions, closing some gas stations, and cutting motor traffic by half by limiting drivers to odd or even days (based on their license plate numbers) , reducing bus and subway fares, opening new subway lines, and banning high-emission vehicles. The city further assembled 3,800 natural gas -powered buses, one of
16335-427: The surface were decreased, whereas ground and near-surface air temperatures , vertical air dilution and ozone levels were increased. Because of the combined factors of urbanization and pollution caused by burning of fossil fuel , Beijing is often affected by serious environmental problems, which lead to health issues of many inhabitants. In 2013 heavy smog struck Beijing and most parts of northern China, impacting
16470-661: The term "techno-nationalism" was originally applied to the United States in the 1980s, it has since been used to describe nationalistic technology policies in many countries, particularly in Asia. Chinese techno-nationalism is rooted in the country's humiliation at the hands of more advanced countries in the 19th century. Indeed, China's leaders (like those of other countries) have long seen scientific and technological development as vital for achieving economic affluence, national security, and national prestige. Lacking indigenous technological intellectual property and innovation are seen as key national problems. The 21st century has thus seen
16605-399: The urban area of Beijing is 12.9 °C (55.2 °F) to 13.3 °C (55.9 °F), of which the average daily minimum temperature is 7.7 °C (45.9 °F) to 8.4 °C (47.1 °F), and the average daily maximum temperature is 18.5 °C (65.3 °F) to 18.9 °C (66.0 °F). The monthly daily average temperature in January is −2.7 °C (27.1 °F), while in July it
16740-665: The warlords commanding the regional armies. Following the success of the Kuomintang 's Northern Expedition , the capital was formally moved to Nanjing in 1928. On 28 June the same year, Beijing's name was returned to Beiping (written at the time as "Peiping"). On 7 July 1937, the 29th Army and the Japanese army in China exchanged fire at the Marco Polo Bridge near the Wanping Fortress southwest of
16875-622: The website of the Beijing Environmental Protection Bureau (BJEPB). The American Embassy of Beijing also reports hourly fine particulate (PM2.5) and ozone levels on Twitter. Since the BJEPB and US Embassy measure different pollutants according to different criteria, the pollution levels and the impact to human health reported by the BJEPB are often lower than that reported by the US Embassy. The smog
17010-448: The world (2010–2019). In 2020, the Beijing subway was the fourth busiest and second longest in the world . The Beijing Daxing International Airport , Beijing's second international airport, is the largest single-structure airport terminal in the world. The city has hosted numerous international and national sporting events, the most notable being the 2008 Summer Olympics and 2008 Summer Paralympics Games. In 2022, Beijing became
17145-526: Was an increase by 20% over the previous year. In total 818,400 have returned to China with this occurring in particular in recent years. 186,200 returned to China in 2011 which was an increase by 38% over the previous year. China offers several benefits for high-achieving foreign educated Chinese who return to China. Students are now also returning because increased job opportunities unlike previously when many stayed abroad due lack of jobs in China. A 2009 study found that only 10% of Chinese students plan to stay in
17280-576: Was applied to the city in 1403 during the Ming dynasty to distinguish the city from Nanjing (the "Southern Capital"). The English spelling Beijing is based on the government's official romanization (adopted in the 1980s) of the two characters as they are pronounced in Standard Mandarin . An older English spelling, Peking , was used by Jesuit missionary Martino Martini in a popular atlas published in Amsterdam in 1655. Although Peking
17415-664: Was bilingual or Chinese. This early Qing Beijing later formed the setting for the Chinese novel Dream of the Red Chamber . Northwest of the city, Qing emperors built several large palatial gardens including the Old Summer Palace and the Summer Palace . During the Second Opium War , Anglo-French forces captured the outskirts of the city, looting and burning the Old Summer Palace in 1860. Under
17550-573: Was built on the rugged topography to defend against nomadic incursions from the steppes. Mount Dongling , in the Western Hills and on the border with Hebei , is the municipality's highest point, with an altitude of 2,303 metres (7,556 ft). Major rivers flowing through the municipality, including the Chaobai , Yongding , Juma , are all tributaries in the Hai River system, and flow in
17685-582: Was established in an effort to reduce dependence on foreign semiconductor companies. Based on the success of the Special Economic Zones of the People's Republic of China , China has created Economic and Technological Development Zones . They have the purposes of building up high-tech industries, attracting foreign investment, increasing exports, and improve the regional economy. They are considered to have been very successful and have been expanded from an initial fourteen to fifty-four. In
17820-667: Was issued. According to Beijing's environmental protection bureau's announcement in November 2016, starting from 2017 highly polluting old cars will be banned from being driven whenever Smog "red alerts" are issued in the city or neighboring regions. In recent years, there has been measurable reductions in pollutants after the "war on pollution" was declared in 2014, with Beijing seeing a 35% reduction in fine particulates in 2017 and further reduction by 2020. The primary factors behind this reduction were replacing coal power with natural gas and cleaning up polluting industrial facilities in
17955-478: Was set on 15 June 1942). See or edit raw graph data . Three styles of architecture are predominant in urban Beijing. First, there is the traditional architecture of imperial China, perhaps best exemplified by the massive Tian'anmen (Gate of Heavenly Peace), which remains the People's Republic of China's trademark edifice, the Forbidden City , the Imperial Ancestral Temple and
18090-505: Was then gradually reformed. Media began promoting the value of S&T, scientific thinking, and scientific achievement. The third and fourth generations of leaders came almost exclusively from technical backgrounds. In March 1986, China launched the large-scale technology development plan, the 863 Project . The State Council of the People's Republic of China in 1995 issued the "Decision on Accelerating S&T Development" which described planned Science & Technology development for
18225-513: Was used to supply the Ming military garrisons in the area and renamed Beiping ( Wade–Giles : Peip'ing, "Northern Peace"). Under the Hongwu Emperor's feudal policies, Beiping was given to his son Zhu Di , who was created " Prince of Yan ". The early death of Zhu Yuanzhang 's heir led to a succession struggle upon his death, one that ended with the victory of Zhu Di and the declaration of the new Yongle era . Since his harsh treatment of
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