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143-416: Zhu Tao was born in sometime between 744 and 748. His family was from You Prefecture (幽州, in modern Beijing ). Both his great-grandfather Zhu Li (朱利) and grandfather Zhu Siming (朱思明) served as minor imperial officials. His father Zhu Huaigui (朱懷珪) served as an officer under Pei Kuan (裴寬) the military governor ( Jiedushi ) of Fanyang Circuit (范陽, headquartered at You Prefecture), commanding Pei's guards, and

286-616: 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

429-536: A campaign to capture the key Tang city of Nanyang (南陽, in modern Nanyang, Henan ) and then to attack south further, but while he trapped the Tang commander Lu Jiong ( 魯炅 ) in Nanyang, he was not able to capture the city quickly, and after Lu eventually fought his way out of the siege and fled to Xiangyang , Tian abandoned the campaign as well and returned to Luoyang. In fall 757, a joint Tang and Huige army commanded by Li Chu

572-466: 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

715-1055: A different Ji Prefecture than the one that Zhu Tao's father Zhu Huaigui had been the prefect of). Emperor Dezong also sent messengers to Tian and Li Na, urging them to turn against Zhu Tao as well, and when Emperor Dezong declared a general pardon in spring 784—the scope of which included even Zhu Tao, Wang, Tian, Li Na, and Li Xilie and implicitly promising them that if they submitted to nominal imperial authority again, he would not dare to interfere with them again—Wang, Tian, and Li Na all renounced their self-claimed royal titles. However, Zhu Tao, unaware of this development, began his plan of march toward Luoyang in early 784. He went through Hengji and Weibo with great ceremonies of welcome from Wang and Tian. Eventually, when Zhu reached Yongji (永濟, in modern Handan) and requested that Tian join him in advancing to Luoyang, Tian refused. This drew Zhu's anger, and he divided his troops, along with Huige troops, in attacking several different Weibo cities. Tian put up his defense at Wei Prefecture, waiting for aid; while he

858-419: 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

1001-581: A forward commander and recaptured Luoyang. In winter 760, as part of a campaign to capture Tang territory, Shi sent Tian to the Huaixi region (淮西, i.e., modern southern Henan), but little is known about how successful the campaign was. Shi Siming was himself assassinated by his son Shi Chaoyi in 761, and Shi Chaoyi took the throne. After a Tang and Huige joint force again recaptured Luoyang in fall 762, Tian withdrew his force and joined Shi Chaoyi at Wei Prefecture (衛州, roughly modern Puyang , Henan ) to fight against

1144-429: A harder line with warlords, refused. Li Weiyue and his allies—Tian Chengsi's nephew Tian Yue , who had succeeded Tian Chengsi in 779; Li Zhengji (who would himself die later in 781 and be succeeded by his son Li Na , without imperial approval); and Liang Chongyi the military governor of Shannan East Circuit (山南東道, headquartered in modern Xiangfan , Hebei ), prepared for war against the imperial government. As part of

1287-726: 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

1430-472: 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

1573-457: A messenger to Li Baochen in protest. Li Baochen, wanting to be conciliatory, sent a cane back with Tian's messenger and allowed Tian to discipline Li Baozheng—but Tian, in anger over his son's death, caned Li Baozheng to death, causing Li Baochen to break off the alliance with Tian. He and Li Zhengji, who also felt slighted by Tian, submitted petitions to the imperial government asking to attack Tian, and Emperor Daizong agreed, launching troops from

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1716-520: A military general in the Chinese Yan rebel state. who later submitted to and became a general of the Tang dynasty , from which Yan had rebelled. As was in the case of several other Yan generals who submitted to Tang but who had substantial army and territorial holdings, Tian was allowed to retain his command and territory, semi-independent from the Tang imperial government structure, and among these generals, he

1859-970: A new state of Chu in spring 784, although without further pledge of allegiance by the four.) Meanwhile, in summer 783, an incident would occur to begin to erode the alliance between Zhu and Wang. The imperial general Li Sheng had wanted to cut off the supply lines between Lulong and Weibo by capturing Lulong's Zhuo (涿州, in modern Baoding) and Mo (莫州, in modern Cangzhou) Prefectures, and therefore joined forces with Zhang Xiaozhong's son Zhang Shengyun (張昇雲) in sieging Zhu's general Zhang Jingji (鄭景濟) at Qingwan (清苑, in modern Baoding). Zhu left his general Ma Shi (馬寔) at Weibo and personally relieved Qingwan, defeating Li Sheng and Zhang Shengyun and forcing them to withdraw back to Yi Prefecture, under Zhang Xiaozhong's control. Upon defeating Li Sheng and Zhang Shengyun, however, Zhu did not immediately return to Weibo, and Wang sent his subordinate Song Duan (宋端) to Zhu, urging him to return to Weibo as soon as possible. When Song met Zhu, Song

2002-414: A number of circuits loyal to the imperial government, in addition to Li Baochen's and Li Zhengji's forces, to attack Tian. Li Baochen, Zhu Tao (whose brother Zhu Ci had killed Zhu Xicai in 772, submitted Lulong to Tang imperial authority, and went to Chang'an to serve as chancellor , leaving Zhu Tao in command of Lulong), and Xue Jianxun ( 薛兼訓 ) the military governor of Taiyuan Circuit attacked Tian from

2145-464: 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

2288-561: 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

2431-449: A princely title to show independence from imperial authority, but keep Tang's era name in order not to completely break from Tang. On December 9, 782, in an elaborate ceremony, Zhu claimed the title of Prince of Ji; Wang claimed the title of Prince of Zhao; Tian claimed the title of Prince of Wei; and they issued a letter offering Li Na the title of Prince of Qi. They also established administrations with governmental structures paralleling

2574-479: A recommendation that Zhang be named the military governor of Chengde (even though most of Chengde was then still in Li Weiyue's control), and Emperor Dezong agreed. In gratitude, Zhang had his son Zhang Maohe (張茂和) marry Zhu's daughter, and Zhu Tao and Zhang Xiaozhong formed a friendship. In spring 782, Zhu Tao and Zhang Xiaozhong captured Shulu (束鹿, in modern Shijiazhuang). Li Weiyue, in fear, considered submitting to

2717-546: A severe defeat to the imperial generals Ma Sui and Li Huaiguang , forcing the imperial forces to lift the siege on Wei Prefecture. Wang suggested pursuit, but Zhu, believing in Ma's subsequent message that he was willing to submit and request that Emperor Dezong grant Zhu the powers to deal with all lands north of the Yellow River , stopped the pursuit. When Ma subsequently regrouped and refused to submit, Zhu apologized to Wang, but it

2860-674: 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

3003-913: A substantial distance, requested a few days of rest. However, the Huige general assisting Zhu, as well as Yang Bu (楊布) and Cai Xiong, advocated for immediate attack. The next day, May 29, 784, the armies battled, and the overly confident Zhu was defeated by Wang's and Li Baozhen's forces. Over 10,000 of his 30,000 soldiers were killed, and over 10,000 deserted. Zhu, with a few thousand remaining soldiers, feared annihilation at Wang's and Li Baozhen's hands and fled to De Prefecture. Wang and Li Baozhen were unable to give chase because of dense fog. Zhu executed Yang and Cai and decided to return to You Prefecture, where he had left his cousin Liu Peng in charge—but as he did so, he feared that Liu would take advantage and seize power. However, when he returned to You Prefecture, Liu mobilized

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3146-523: A surprise attack on him, but was unable to kill Zhu Tao, effectively ending any hopes of the campaign against Tian and subsequently creating an enmity between the Chengde and Lulong Circuits. Tian subsequent ceded Cang Prefecture (滄州, in modern Cangzhou , Hebei ) to LI Baochen, cementing the reformed alliance and increasing Li Baochen's holdings to seven prefectures. Meanwhile, though, Tian submitted humble letters of submission to Emperor Daizong, offering to visit

3289-505: A surprise attack on him, but was unable to kill Zhu, effectively ending any hopes of the campaign against Tian and subsequently creating an enmity between the Chengde and Lulong Circuits. Emperor Daizong was subsequently forced to reaccept Tian Chengsi's nominal submission. In 781, Li Baochen died. His son Li Weiyue requested imperial approval to succeed him. However, with Emperor Daizong having died in 779 and been succeeded by his son Emperor Dezong , Emperor Dezong, who had wanted to take

3432-426: 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

3575-543: 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

3718-719: 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)

3861-404: 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 the largest number of Fortune Global 500 companies in

4004-447: 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

4147-506: 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

4290-578: 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 the Jing-Jin-Ji cluster . It is ranked as the 10th most important city in the world by Knight Frank . Beijing

4433-452: 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

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4576-456: 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"

4719-692: 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 ),

4862-648: 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

5005-639: 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

5148-457: 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

5291-533: The Prince of Yanmen . In 774, Emperor Daizong also promised to give his daughter Princess Yongle to Tian's son Tian Hua ( 田華 ) in marriage, hoping that this would improve the relationship with Tian, but Tian became increasingly arrogant thereafter. Meanwhile, Tian's alliance with the other generals was disrupted by his actions. Xue Song, who controlled Zhaoyi Circuit (昭義, headquartered in Anyang , Henan ) had died in 773 and

5434-646: 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

5577-455: 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

5720-524: 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

5863-520: 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

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6006-602: The Xi tribes, he was promoted several times, eventually to be a general under An. An Lushan rebelled against Emperor Xuanzong's rule in late 755 and, on his campaign south to attack the Tang eastern capital Luoyang , had Tian, along with An Zhongzhi and Zhang Xiaozhong , serve as his forward commanders. An's forces quickly captured Luoyang, and he declared himself the emperor of a new state of Yan there. In 757, after An Lushan had been assassinated and succeeded by his son An Qingxu , Tian continued to serve under An Qingxu and commanded

6149-601: 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

6292-546: The Yabing ( 牙兵 ), to protect himself. The four former Yan generals formed alliances among themselves, as well as with two other military governors, Li Zhengji and Liang Chongyi , hoping to be able to pass their territories to their descendants, semi-independent from the Tang imperial government, retaining their armies and taxes without submitting them to the imperial government. As part of this alliance, Li Baochen's brother Li Baozheng ( 李寶正 ) married Tian's daughter. By 773, Tian

6435-451: 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

6578-515: 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 . Tian Chengsi Tian Chengsi (705   – March 4, 779), formally the Prince of Yanmen , was a Chinese military general, monarch, and politician. He served as

6721-688: 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

6864-503: 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

7007-406: 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

7150-468: The Biansong officer Li Lingyao ( 李靈曜 ) seized control of Biansong and wanted to become semi-independent as well. When the imperial government subsequently mobilized the circuits around Biansong to attack Li Lingyao, of all of the nearby circuits, Tian Chengsi not only did not attack Li Lingyao, but also allied with Li Lingyao, sending an army commanded by his nephew Tian Yue to aid Li Lingyao. Tian, however,

7293-511: 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

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7436-513: 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,

7579-748: The Prince of Chu (the son of Emperor Xuanzong's son and successor Emperor Suzong recaptured Chang'an, forcing An Qingxu to flee north of the Yellow River . At that time, Tian was attacking the Tang general Lai Tian ( 來瑱 ) at Yingchuan (潁川, in modern Xuchang , Henan ), and upon hearing the news, he initially offered to surrender to the Tang general Guo Ziyi , but after Guo did not react immediately, Tian changed his mind and fled north as well with another Yan general, Wu Lingxun ( 武令珣 ) to join An Qingxu at Yecheng . In fall 758, Tang forces closed in on Yecheng. An Qingxu had himself, Tian, and Cui Qianyou ( 崔乾祐 ) command

7722-448: The Tang capital Chang'an to pay respect to Emperor Daizong. Emperor Daizong agreed, but as soon as Emperor Daizong pardoned Tian, Tian refused to visit Chang'an, and Emperor Daizong did not press the issue. During the campaign, however, Tian also lost Ying Prefecture (瀛洲, in modern Cangzhou as well) to Zhu Tao. In 776, when Tian Shenyu ( 田神玉 ) the military governor of Biansong Circuit (汴宋, headquartered in modern Kaifeng , Henan ) died,

7865-408: The Tang capital Chang'an to report what had happened. Emperor Daizong made Zhu Ci the military governor, and Zhu Tao thereafter served under his brother. At that time, the Tang western border was often subject to Tufan incursions, and the imperial governor regularly conscripted troops from the circuits to participate in defense in the fall – a season when Tufan often attacked. However, ever since

8008-780: The Tang forces commanded by Pugu Huai'en , but Pugu defeated them, forcing them to further flee north. Yan generals began to desert Shi Chaoyi en masse, but for some time, Tian did not, and by the time around new year 762, he was under siege in Mo Prefecture (莫州, in modern Cangzhou , Hebei ) with Shi Chaoyi. He proposed to Shi Chaoyi that Shi Chaoyi head to You Prefecture (幽州, i.e., the headquarters of Fanyang Circuit) to seek reinforcements, and that he would stay and defend Mo Prefecture. Shi Chaoyi agreed, but as soon as Shi Chaoyi left Mo Prefecture, Tian turned against him and surrendered Mo Prefecture to Tang, presenting Shi Chaoyi's empress dowager , empress , and children to Tang. Shi Chaoyi, finding

8151-434: The Tang imperial government to further show independence, although the titles were intentionally different from Tang's to show some subordination. Meanwhile, though, as Zhu Tao's and Wang Wujun's troops were continuing to battle Tang imperial troops on Tian Yue's soil, all three of them were becoming financially drained. They pinned their hopes on alliance with yet another military governor with greater pretensions – Li Xilie

8294-496: The Weibo front, were angry that they were not given sufficient rewards, and they mutinied, forcing Emperor Dezong to flee to Fengtian (奉天, in modern Xianyang , Shaanxi ). The mutineers supported Zhu Ci—who had been forced into retirement after Zhu Tao turned against the imperial government—as their leader. Zhu Ci subsequently declared himself the emperor of a new state of Qin, and he created Zhu Tao crown prince . Zhu Tao, upon receiving

8437-404: The Weibo general Xing Caojun (邢曹俊), and Ma Shi sieging Wei Prefecture, but could not capture either. Meanwhile, Li Baozhen and Wang had joined their forces and advanced into Weibo territory. Hearing the news, Ma Shi lifted the siege on Bei Prefecture and joined forces with Zhu. When Zhu prepared to battle Wang and Li Baozhen the next day, Ma Shi, citing the fact that his soldiers at just travelled

8580-502: The Yan army to fight against the converging Tang forces, but Tang forces defeated them, forcing them to withdraw within the city to defend against the siege. It was only in 759, when Shi Siming fought an inconclusive battle near Yecheng that forced Tang forces to withdraw, that the siege on Yecheng was lifted. Shi then killed An Qingxu and took over the Yan throne himself, and Tian continued to serve under Shi. Shi soon advanced south with Tian as

8723-444: The alliance as well, Zhang refused. When, in summer 784, Li Na's officer Li Shizhen (李士真) surrendered to imperial forces with De and Di Prefectures, Zhu seized Li Shizhen and the control of those two prefectures anyway, although at this point he had not made a clear break with the imperial government. When, shortly after, Emperor Dezong issued an edict ordering that Lulong, Yidingcang, and Wang's Hengji Circuit (恆冀) attack Tian Yue from

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8866-487: 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

9009-460: The campaign), with the lesser titles of military prefect (團練使, Tuanlianshi ). Emperor Dezong, on paper, gave Lulong two additional prefectures—De (德州, in modern Dezhou , Shandong ) and Di (棣州, in modern Binzhou , Shandong )—both still then held by Li Na. Zhu was angered by Emperor Dezong's refusal to give him any part of Chengde territory (in particular, Shen Prefecture) and requiring him to capture two additional prefectures on his own, while Wang

9152-402: 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

9295-478: 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

9438-420: The circuit, now renamed Lulong (盧龍). Li Huaixian made Zhu Huaigui the prefect of Ji Prefecture (薊州, in modern Tianjin ), and Zhu Huaigui continued to serve under Li Huaixian until Zhu Huaigui's death in 766. Zhu Tao, along with his older brother Zhu Ci, both became officers under Li Huaixian as well. In 768, Zhu Tao and his brother Zhu Ci, as well as a colleague, Zhu Xicai , plotted to kill Li Huaixian. Under

9581-475: The circuit. By 775, one of the military governors who had only nominally been submissive to Emperor Daizong, Tian Chengsi the military governor of Weibo Circuit (魏博, headquartered in modern Handan , Hebei ), had particularly offended not only the imperial government but also his fellow warlords—by seizing much of Zhaoyi Circuit (昭義, headquartered in modern Anyang , Henan ) after the death of its military governor Xue Song in 773; by looking down on Li Zhengji

9724-684: 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

9867-443: 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

10010-712: 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

10153-498: 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

10296-518: 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,

10439-667: 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 ,

10582-542: 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

10725-580: 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

10868-563: 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

11011-399: The communique from Zhu Ci, immediately spread the news to the other circuits in hopes that they would declare for Zhu Ci as well. Upon news of Emperor Dezong's flight to Fengtian arriving at the imperial camp at Weibo, the imperial troops scattered, with Li Huaiguang heading for Fengtian to aid Emperor Dezong, and Ma Sui, Li Baozhen, and Li Qiu (李艽) returning to their respective circuits. Upon

11154-636: 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,

11297-477: The defense against Tufan later that year. After Zhu Ci left Lulong, however, even though he remained military governor, Zhu Tao killed a number of his close associates, and the relationship between the brothers deteriorated. Zhu Ci, believing that it would not be safe for him to return to Lulong, requested to remain at Chang'an. Emperor Daizong agreed, but let him keep the title of military governor while making Zhu Tao acting military governor, in effective control of

11440-447: 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

11583-493: The end of the Anshi Rebellion, Lulong Circuit had not submitted to such conscription. In 773, Zhu Ci, breaking that tradition and showing submission to the imperial government, sent Zhu Tao with 5,000 elite soldiers to Chang'an to participate in the fall defense. Emperor Daizong was very pleased, and he welcomed Zhu Tao in great feasts and gave him much reward. While he was conversing with Emperor Daizong, Emperor Daizong posed

11726-487: 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

11869-592: 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

12012-569: 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

12155-461: The imperial countermeasures, Emperor Dezong ordered Zhu to attack Chengde from the north. Zhu thus launched his army and headed for Yi Prefecture (易州, in modern Shijiazhuang), defended by the capable Chengde general Zhang Xiaozhong . Zhu sent his secretary Cai Xiong (蔡雄) to persuade Zhang that the imperial forces would soon be able to destroy Chengde and Weibo and that he should join the imperial cause. Zhang agreed and surrendered. Zhu then submitted

12298-403: The imperial government and giving up Chengde, but after Tian Yue found out, he angrily demanded the death of Li Weiyue's secretary Shao Zhen (邵真), who had recommended submission; Li Weiyue killed Shao and sent an army, commanded by the Weibo officer Meng You (孟祐) and his own officer Wang Wujun , to try to recapture Shulu. The joint Zhu and Zhang forces, however, defeated Li Weiyue's forces—as Wang

12441-617: The imperial troops' withdrawal, Zhu Tao and Wang also withdrew to their own circuits. Meanwhile, Zhu Tao, who had earlier married a daughter of a Huige khan, requested aid from Huige. Huige sent 3,000 soldiers to aid Zhu Tao in his efforts to further advance south to capture the eastern capital Luoyang . However, by this point, Li Baozhen had persuaded Wang to turn against Zhu Tao—pointing out that if Zhu Tao and Zhu Ci were successful together, Wang would be under their control and further that Zhu's title of Prince of Ji showed implicit ambition to possess Wang's Ji Prefecture (冀州, in modern Hengshui,

12584-712: 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

12727-407: The joint forces. Meanwhile, Li Baochen was offended when an imperial eunuch , Ma Chengqian ( 馬承倩 ), who had visited Li Baochen's army, was so dissatisfied with Li Baochen's gift to him that he threw it on the ground, and Tian was also able to use hoaxes to persuade Li Baochen that if he joined forces with Tian to attack Lulong, he would be successful. Li Baochen thus turned against Zhu Tao, launching

12870-616: 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

13013-520: 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,

13156-476: 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

13299-462: 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

13442-412: The military governor of Huaixi Circuit (淮西, headquartered in modern Xuchang , Henan ), whose circuit was then wealthy. They, along with Li Na, thus sent emissaries to Huaixi, suggesting to Li Xilie that he take imperial title. Li Xilie did not do so immediately, but began to claim titles greater than the ones bestowed him by Emperor Dezong. (Li Xilie would eventually declare himself to be the emperor of

13585-490: The military governor of Pinglu Circuit (平盧, headquartered in modern Tai'an , Shandong ) and Li Baochen the military governor of Chengde (成德, headquartered in modern Shijiazhuang , Hebei ); and by killing Li Baochen's brother Li Baozheng (李寶正), who was also his son-in-law, after his own son Tian Wei (田維) died after colliding with Li Baozhen while playing polo . Li Baochen and Li Zhengji thus offered to attack Tian, and Emperor Daizong decided to take this opportunity to destroy

13728-565: 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

13871-476: The nearby Zelu Prefecture (澤潞, headquartered in modern Changzhi , Shanxi ), maintaining the name of Zhaoyi for the merged circuit. Meanwhile, he also looked down at both Li Baochen and Li Zhengji. In or shortly before 775, there was an incident where Li Baozheng and Tian's son Tian Wei ( 田維 ) were playing polo at Weibo, when an accidental collision between Li Baozheng's and Tian Wei's horses killed Tian Wei. Tian Chengsi, in anger, imprisoned Li Baozheng and sent

14014-519: 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

14157-415: 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

14300-596: 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

14443-560: The north, Wang arrested the imperial messengers and delivered them to Zhu. Zhu thereafter declared to his subordinates that they were going to head south to attack, not to help, the imperial forces. His officers initially resisted the declaration, forcing him to postpone the action and to kill a number of them. Emperor Dezong, hearing this, tried to placate Zhu by creating him the Prince of Tongyi and exiling several officials whom Zhu had grudges against, but this did not stop Zhu's resolve. Zhu subsequently also sent secret messages to Zhu Ci, who

14586-404: The north, while Li Zhengji and Li Zhongchen the military governor of Huaixi Circuit (淮西, headquartered in modern Zhumadian , Henan ) attacked Tian from the south. Initially, these joint forces were successful in their attacks against Tian, seizing Ci Prefecture (磁州, in modern Handan) from Tian, but Tian was subsequently able to persuade Li Zhengji to break off his attack, substantially weakening

14729-557: The officers inside would be united to fight against the attack, while he expected that without such pressure, the officers inside would kill Li Weiyue and surrender; and that he believed Zhu to be too much of a bragger and an unreliable ally. As Zhang predicted, Wang, once he returned to Heng Prefecture, started an uprising and killed Li Weiyue and surrendered. In the aftermaths of Li Weiyue's death, Li Weiyue's brother-in-law Yang Rongguo (楊榮國), who had been defending Shen Prefecture (深州, in modern Hengshui , Hebei ), surrendered to Zhu. After

14872-464: 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

15015-424: The plan, Zhu Ci and Zhu Tao arrived at Li's headquarters and killed the guards on the outside, but when Zhu Xicai did not then arrive with his troops to enter and kill Li, Zhu Ci became apprehensive and considered fleeing, staying only after Zhu Tao commented, "If our plan fails, we will die anyway. Why bother fleeing?" Zhu Xicai soon arrived, and they entered, killed Li, and slaughtered his family. Zhu Xicai claimed

15158-435: The question: "Are you or Zhu Ci more able?" Zhu Tao responded: We both have strengths and weaknesses. As far as leading the soldiers and judging proper strategy, your subject is not as good as Zhu Ci. But I am 27 and am able to see the face of a dragon [(i.e., Emperor Daizong)]. Zhu Ci is five years older and has not been at the house of a phoenix [(i.e., the imperial palace)]. In this, I am better than he. Emperor Daizong

15301-416: The rebellious Tian. As Zhu Tao was then submissive to the imperial government, he joined forces with Li Baochen and another general loyal to the imperial government, Xue Jianxun (薛兼訓), to attack Weibo from the north, while Li Zhengji and Li Zhongchen attacked from the south. The joint forces had initial successes, but when Zhu and Li Baochen attacked Cang Prefecture (滄州, in modern Cangzhou , Hebei ), which

15444-456: The region. Late in the reign of Emperor Zhongzong's nephew Emperor Xuanzong , Tian Chengsi served as a forward commanding officer under the general An Lushan , the military governor ( jiedushi ) of Fanyang Circuit (范陽, headquartered in modern Beijing ), and particularly impressed An with his ability to maintain strict military discipline. For his contributions in campaigns against the Khitan and

15587-449: The remaining troops and exited the city to welcome him in grand ceremony. Meanwhile, as Zhu Tao continued to be under attack by Wang Wujun (who was, briefly, given the additional title as military governor of Lulong by Emperor Dezong, whose forces had since defeated Zhu Ci and who had returned to Chang'an, in order to pressure Zhu Tao), so he sent an apologetic offer to submit to Emperor Dezong again. Emperor Dezong issued an edict accepting

15730-596: 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

15873-507: The resubmission and restoring his offices. He died in 785 and was given posthumous honors despite the campaigns and mutiny that he had waged against the imperial government. Liu Peng succeeded him. 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 is the world's most populous national capital city as well as China's second largest city after Shanghai . It

16016-521: 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

16159-549: The situation hopeless, committed suicide in flight. The Tang imperial government was unsure as to what to do with the main Yan generals who surrendered and feared that removing them would lead to another rebellion. At Pugu's suggestion, Li Chu, who had by this point succeeded Emperor Suzong as emperor (as Emperor Daizong), made four key Yan generals—Tian, Xue Song , Li Huaixian , and An Zhongzhi (whose name had been changed to Li Baochen by this point)—military governors and allowed them to keep their armies and posts. In Tian's case, he

16302-455: The soldiers were angry at Zhu Xicai, assassinated him. Initially, the headquarters fell a state of confusion. Zhu Tao quickly induced his soldiers into proclaiming that the only person qualified to succeed as military governor was Zhu Ci. The other officers agreed, and Zhu Ci, who was then outside the circuit capital, was welcomed back to the capital to take over command. Zhu Ci claimed the title of acting military governor and sent messengers to

16445-789: 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

16588-427: 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

16731-458: The title of acting military governor. The imperial government, later in the year, acquiesced and made Zhu Xicai military governor. Zhu Tao continued to serve under Zhu Xicai, and it was said that because they shared the same surname, Zhu Xicai trusted him greatly and put him in command of the headquarters guards. Zhu Xicai, however, was said to be cruel and harsh, alienating his subordinates. In 772, Zhu Xicai's secretary Li Huaiyuan (李懷瑗), because

16874-399: 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

17017-572: The victory at Chengde, however, Emperor Dezong made a series of moves that simultaneously alienated Zhu and Wang. He refused to give Shen Prefecture to Lulong, as Zhu had requested. Rather, he divided the seven prefectures of Chengde into three smaller circuits, making Zhang the military governor of a newly created Yidingcang Circuit (易定滄, headquartered in modern Baoding, soon renamed to Yiwu (義武)), consisting of three prefectures, while giving two prefectures each to Wang and Kang Rizhi (康日知, another Chengde general who had submitted to imperial authority during

17160-638: 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

17303-597: 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

17446-547: 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 the world (2010–2019). In 2020, the Beijing subway

17589-440: Was angered that contrary to Emperor Dezong's implicit promises to give whoever killed Li Weiyue Li Weiyue's offices, he not only received a lesser title, but was in a position where he could easily be destroyed. Tian Yue, who was then still under imperial attack, thus persuaded Zhu and Wang to join him in an alliance to defend against imperial forces. Zhu and Wang both agreed, although when Zhu further tried to persuade Zhang to join

17732-563: 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

17875-464: Was apprehensive that if he prevailed, Li Weiyue would be without apprehension and would kill him after his return, as Li Weiyue had also been fearful of him. Zhu wanted to continue on to the capital of Chengde, Heng Prefecture, but stopped his advances when, to his surprise, Zhang backed off and withdrew to Yifeng (義豐, in modern Baoding , Hebei ). (When his subordinates questioned this move, Zhang stated his reasons—that if they pressured Heng Prefecture,

18018-635: 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

18161-556: 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

18304-656: Was defeated by two generals loyal to the imperial government, Li Zhongchen and Ma Sui , and Li Lingyao was himself soon captured by another general loyal to the imperial government, Li Mian , and executed. Tian Chengsi subsequently submitted another apology to Emperor Daizong, and Emperor Daizong, feeling that he had no strength to attack Tian again, pardoned him again and did not require him to visit Chang'an. Meanwhile, while Tian Chengsi had 11 sons, he considered Tian Yue to be more capable than his sons, and therefore designated Tian Yue as his heir and had his sons serve as Tian Yue's assistants. When he died in 779, at his request and

18447-602: Was defended by Tian's cousin Tian Tingjie (田庭玠), they could not capture it quickly. Meanwhile, Tian Chengsi had persuaded Li Zhengji to withdraw with flattery. In addition, Li Baochen was offended when an imperial eunuch , Ma Chengqian (馬承倩), who had visited Li Baochen's army, was so dissatisfied with Li Baochen's gift to him that he threw it on the ground, and Tian was also able to use hoaxes to persuade Li Baochen that if he joined forces with Tian to attack Lulong, he would be successful. Li Baochen thus turned against Zhu, launching

18590-440: Was demanding to be given a title of honorary chancellor, and he had also built a temple dedicated to the four Yan emperors (An Lushan, An Qingxu, Shi Siming, Shi Chaoyi). Emperor Daizong sent an eunuch messenger, Sun Zhigu ( 孫知古 ), to Weibo to persuade Tian to destroy the temple. When Tian did, Emperor Daizong rewarded him with the honorary chancellor title of Tong Zhongshu Menxia Pingzhangshi ( 同中書門下平章事 ), and also created him

18733-491: Was doing so, he was assassinated and succeeded by his cousin Tian Xu (Tian Chengsi's son), and while Zhu rejoiced at the news and Tian Xu initially made overtures to Zhu, Tian Xu eventually continued Tian Yue's policies, continuing to be allied with imperial forces under Li Baozhen and Ma Sui. Zhu thus continued to siege two primary cities of Weibo—with Zhu himself sieging Bei Prefecture (貝州, in modern Xingtai , Hebei ), defended by

18876-432: Was given a general title. Zhu Huaigui later served as a general for the rebel Yan state after An Lushan , then the military governor of Fanyang, rebelled against Emperor Xuanzong's rule in 755. At the end of the rebellion , when the Yan general then in charge of Fanyang, Li Huaixian , submitted to the rule of Emperor Xuanzong's grandson Emperor Daizong , Emperor Daizong allowed Li Huaixian to remain military governor of

19019-427: Was given five prefectures, which were made into Weibo Circuit (魏博, headquartered in modern Handan , Hebei ). It was said that Tian Chengsi emphasized greatly on military strength, that as soon as he had full control of Weibo Circuit, he imposed heavy taxes and conscripted the men for the army and logistics service—and that within a year, his army was some 100,000 strong. Among this he selected an elite group, known as

19162-587: Was harsh in his words, and Zhu threw a fit of anger – causing Wang to be fearful and to apologize to Ma in person. Zhu's angers subsided, and it was said that he continued to treat Wang as an ally, but that Wang's secret resentment toward Zhu grew even more. Wang subsequently responded to an overture by the imperial general Li Baozhen into forming a secret alliance, although he also continued in alliance with Zhu, Tian, and Li Na. In fall 783, soldiers from Jingyuan Circuit (涇原, headquartered in modern Pingliang , Gansu ), then at Chang'an in preparation for deployment to

19305-434: Was initially succeeded by his son Xue Ping , who however yielded then to Xue Song's brother Xue E . In spring 775, however, Tian induced Zhaoyi's officer Pei Zhiqing ( 裴志清 ) to expel Xue E and submit to him. Tian thus captured Zhaoyi's capital prefecture Xiang Prefecture easily. He was then able to seize three more of Zhaoyi's six prefectures, while the imperial government retained the two other prefectures and merged it with

19448-662: 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

19591-405: Was particularly defiant of the Tang imperial government. Tian Chengsi was born in 705, during the reign of Emperor Zhongzong of Tang . His family was from Ping Prefecture (平州, roughly modern Qinhuangdao , Hebei ), and his ancestors, for several generations, had served in the military. His grandfather Tian Jing ( 田璟 ) and father Tian Shouyi ( 田守義 ) both had reputations for upholding justice in

19734-511: Was pleased by the flattery. Under Zhu Tao's subsequent suggestion – that going to Chang'an himself will show great faithfulness to the emperor – Zhu Ci himself offered to command the Lulong troops in fall defense in 774. Emperor Daizong agreed, and further built a large mansion for Zhu Ci in anticipation of his arrival. In fall 774, Zhu Ci, leaving Zhu Tao in acting command of Lulong, left Lulong and headed for Chang'an, and subsequently participated in

19877-432: Was said that Wang thus bore a grudge against Zhu from this point on. In the aftermaths of the imperial forces' defeat, Tian was grateful to Zhu, and offered to subjugate himself and Wang to Zhu—in effect, offering the emperor title to Zhu. Zhu declined, crediting Wang rather than himself for the victory. At the suggestion of Zhu's staff member Li Ziqian (李子千) and Wang's staff member Zheng Ru (鄭濡), they decided to each claim

20020-516: 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

20163-426: 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 the first city ever to host both

20306-426: Was then defending the important border city Fengxiang (鳳翔, in modern Baoji , Shaanxi ), asking him to rise as well. When this was discovered, Emperor Dezong did not punish Zhu Ci but recalled him to Chang'an. Zhu Tao and Wang subsequently joined their forces and headed south, to try to save Tian Yue, then under siege by imperial forces at Weibo's capital Wei Prefecture. When they arrived at Wei Prefecture, they dealt

20449-506: 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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