Guanganmen incident

The Beijing Subway is the rapid transit system of Beijing Municipality that consists of 27 lines including 22 rapid transit lines, two airport rail links, one maglev line and 2 light rail lines, and 478 stations. The rail network extends 807 km (501 mi) across 12 urban and suburban districts of Beijing and into one district of Langfang in neighboring Hebei province. With 3.8484 billion trips delivered in 2018, an average of 10.544 million trips per day, the Beijing Subway is the world's busiest metro system. Single-day ridership set a record of 13.7538 million on July 12, 2019.The Beijing Subway opened in 1971 and is the oldest metro system in mainland China and on the mainland of East Asia. Before the system began its rapid expansion in 2002, the subway had only two lines. The existing network still cannot adequately meet the city's mass transit needs. Beijing Subway's extensive expansion plans call for 998.5 km (620.4 mi) of lines serving a projected 18.5 million trips every day when Phase 2 Construction Plan finished (around 2025). The most recent expansion came into effect on February 4, 2023, with the opening of an extension to Changping Line.

The Gate of Supreme Harmony (simplified Chinese: 太和门; traditional Chinese: 太和門; pinyin: Tàihémén; Manchu: ᠠᠮᠪᠠᡥᡡᠸᠠᠯᡳᠶᠠᠮᠪᡠᡵᡝᡩᡠᡴᠠ; Möllendorff: amba hūwaliyambure duka) is the second major gate in the south of the Forbidden City in Beijing, China. The gate was originally built during the Ming dynasty, when it was called Fengtianmen (奉天門). Following the Manchu conquest of China, the gate was given its present Chinese and Manchu names. The gate burned down in 1886 due to a fire started by a tipped lamp in the guard room. The present gate dates from the rebuilding after this fire, which was completed in 1894. In the Ming dynasty, the Emperor held morning court sessions at the Gate of Supreme Harmony to discuss state affairs with his ministers, although throughout most of the Ming dynasty the court sessions were purely ceremonial, a demonstration of the Emperor's diligence and the status of the titular first minister. In the Qing dynasty, when the Emperor attended court far more frequently, morning court sessions were held at the Gate of Heavenly Purity, which is much closer to the Emperor's living quarters. The Gate of Supreme Harmony was used occasionally for banquets and other ceremonies. The gate is three bays deep and seven bays wide, covering a total area of 1,371.4 square metres (14,762 sq ft). It is flanked by two minor gates, Zhendu Gate to the west and Zhaode Gate to the east. The gate and the Meridian Gate form the north and south boundaries of a great plaza that is divided by a serpentine waterway, the Inner River of the Golden Water, which is spanned by a set of five bridges. On the north (inner) side of the gate is Harmony Square, leading to the grand Hall of Supreme Harmony, the ceremonial centre of the Forbidden City. Many incense burners are arrayed around the stairs. The central stairway was reserved exclusively for the Emperor and his immediate attendants, as was the central entrance of Meridian Gate.

The Meridian Gate or Wumen (simplified Chinese: 午门; traditional Chinese: 午門; pinyin: Wǔmén; Manchu: ᠵᡠᠯᡝᡵᡤᡳᡩᡠᠯᡳᠮᠪᠠᡳᡩᡠᡴᠠ; Möllendorff: julergi dulimbai duka) is the southern and largest gate of the Forbidden City in Beijing, China. Unlike the other gates of the Forbidden City, the Meridian Gate has two protruding arms on either side, derived from ancient que towers traditionally used to decorate the main entrances of palaces, temples and tombs. The gate has five arches. The three central arches are close together in the main, central section; the two flanking arches are farther apart from the three central arches, and are located between the central section and the protruding arms. The centre arch was formerly reserved for the Emperor alone; the exceptions were the Empress, who could enter it once on the day of her wedding, and the top three scholars of the triennial civil service examinations, who left the exams through the central arch. All other officials and servants had to use the four side arches. A series of buildings form the superstructure of the gate. The central one is a pavilion of nine bays wide, with double eaves. On each of the protruding side, a 13 bays-long building with a single eave, connects the two pyramidal-roofed pavilions that represented the que towers. Its superstructure is also called the "Five Phoenix Turrets" because it is composed of five buildings. Imperial proclamations and almanacs were issued from the gate house. After successful campaigns, the Emperor received prisoners of war here, sometimes followed by mass decapitations.Although urban myth has it that senior officers were executed here in Imperial China; in reality only corporal punishment was actually carried out. Behind the viewer is Upright Gate, the principal entrance to the imperial palace grounds. When proceeding northward through the palace grounds, the next major gate encountered is the Gate of Supreme Harmony.

The Yuan dynasty (Chinese: 元朝; pinyin: Yuáncháo), officially the Great Yuan (Chinese: 大元; pinyin: Dà Yuán; Mongolian: ᠶᠡᠬᠡᠶᠤᠸᠠᠨᠤᠯᠤᠰ, Yeke Yuwan Ulus, literally "Great Yuan State"), was a Mongol-led imperial dynasty of China and a successor state to the Mongol Empire after its division. It was established by Kublai (Emperor Shizu), the fifth khagan-emperor of the Mongol Empire from the Borjigin clan, and lasted from 1271 to 1368. In Chinese historiography, the Yuan dynasty followed the Song dynasty and preceded the Ming dynasty. Although Genghis Khan had been enthroned with the Han-style title of Emperor in 1206 and the Mongol Empire had ruled territories including modern-day northern China for decades, it was not until 1271 that Kublai Khan officially proclaimed the dynasty in the traditional Han style, and the conquest was not complete until 1279 when the Southern Song dynasty was defeated in the Battle of Yamen. His realm was, by this point, isolated from the other Mongol-led khanates and controlled most of modern-day China and its surrounding areas, including modern-day Mongolia. It was the first dynasty founded by a non-Han ethnicity that ruled all of China proper. In 1368, following the defeat of the Yuan forces by the Ming dynasty, the Genghisid rulers retreated to the Mongolian Plateau and continued to rule until 1635 when they surrendered to the Later Jin dynasty (which later evolved into the Qing dynasty). The rump state is known in historiography as the Northern Yuan dynasty.Some of the Yuan emperors mastered the Chinese language, while others only used their native Mongolian language and the 'Phags-pa script.After the division of the Mongol Empire, the Yuan dynasty was the khanate ruled by the successors of Möngke. In official Chinese histories, the Yuan dynasty bore the Mandate of Heaven. The dynasty was established by Kublai Khan, yet he placed his grandfather Genghis Khan on the imperial records as the official founder of the dynasty and accorded him the temple name Taizu. In the edict titled Proclamation of the Dynastic Name issued in 1271, Kublai announced the name of the new dynasty as Great Yuan and claimed the succession of former Chinese dynasties from the Three Sovereigns and Five Emperors to the Tang dynasty.In addition to Emperor of China, Kublai also claimed the title of Great Khan, supreme over the other successor khanates: the Chagatai, the Golden Horde, and the Ilkhanate. As such, the Yuan was also sometimes referred to as the Empire of the Great Khan. However, while the claim of supremacy by the Yuan emperors was at times recognized by the western khans, their subservience was nominal and each continued its own separate development.

The Forbidden City (Chinese: 紫禁城; pinyin: Zǐjìnchéng) is a palace complex in Dongcheng District, Beijing, China, at the center of the Imperial City of Beijing. It is surrounded by numerous opulent imperial gardens and temples including the 22 ha (54-acre) Zhongshan Park, the sacrificial Imperial Ancestral Temple, the 69 ha (171-acre) Beihai Park, and the 23 ha (57-acre) Jingshan Park. It is officially administered by the Palace Museum. The Forbidden City was constructed from 1406 to 1420, and was the former Chinese imperial palace and winter residence of the Emperor of China from the Ming dynasty (since the Yongle Emperor) to the end of the Qing dynasty, between 1420 and 1924. The Forbidden City served as the home of Chinese emperors and their households and was the ceremonial and political center of the Chinese government for over 500 years. Since 1925, the Forbidden City has been under the charge of the Palace Museum, whose extensive collection of artwork and artifacts were built upon the imperial collections of the Ming and Qing dynasties. The Forbidden City was declared a World Heritage Site in 1987.The complex consists of 980 buildings, encompassing 9,999 rooms and covering 720,000 m2 (72 ha)/178 acres. The palace exemplifies the opulence of the residences of the Chinese emperor and the traditional Chinese palatial architecture, and has influenced cultural and architectural developments in East Asia and elsewhere. It is listed by UNESCO as the largest collection of preserved ancient wooden structures in the world. Since 2012, the Forbidden City has seen an average of 14 million visitors annually, and received more than 19 million visitors in 2019. In 2018, the Forbidden City's market value was estimated at 70 billion USD, making it both the world's most valuable palace and the most valuable piece of real estate anywhere in the world.The Forbidden City in Beijing is one of the largest and most well-preserved wooden structures in the world. It was listed as the first batch of national key cultural relics in 1961.

The Hall of Supreme Harmony (Chinese: 太和殿; pinyin: Tài Hé Diàn; Manchu: ᠠᠮᠪᠠ ᡡᠸᠠᠯᡳᠶᠠᠮᠪᡠᡵᡝ ᡩᡝᠶᡝᠨ;Möllendorff: amba hūwaliyambure deyen) is the largest hall within the Forbidden City in Beijing, China. It is located at its central axis, behind the Gate of Supreme Harmony. Built above three levels of marble stone base, and surrounded by bronze incense burners, the Hall of Supreme Harmony is one of the largest wooden structures within China. It was the location where the emperors of the Ming and Qing dynasties hosted their enthronement and wedding ceremonies. The name of the Hall was changed several times throughout the past few centuries, from its initial Fengtian Dian (奉天殿), later to Huangji Dian (皇极殿) in 1562 and to the current one by the Shunzhi Emperor of the Qing dynasty in 1645. Together with the Hall of Central Harmony and Hall of Preserving Harmony, the three halls constitute the heart of the Outer Court of the Forbidden City. The Hall of Supreme Harmony rises some 30 metres (98 ft) above the level of the surrounding square. It is the ceremonial center of imperial power, and the largest surviving wooden structure in China. It is eleven bays wide – with the main room being nine bays wide – and five bays deep, the numbers nine and five being symbolically connected to the majesty of the Emperor. The six pillars nearest the imperial throne are covered with gold, and the entire area is decorated with a dragon motif. The Dragon Throne, in particular, has five dragons coiled around the back and handrests. The screen behind it features sets of nine dragons, again reflecting the "nine-five" symbolism. The Hall of Supreme Harmony features an exquisite throne made of red sandalwood, and formerly used by the emperors of the Qing dynasty. Set into the ceiling directly above the throne is an intricate caisson decorated with a coiled dragon, from the mouth of which issues a chandelier-like set of metal balls, called the "Xuanyuan Mirror", a reference to the Yellow Emperor, a mythological Chinese ruler. According to legend, the metal balls will fall and strike dead any usurper to the throne. In the Ming dynasty, the emperors held court here to discuss affairs of state. During the Qing dynasty, emperors held court far more frequently. As a result, the location was changed to the Inner Court, and the Hall of Supreme Harmony was only used for ceremonial purposes, such as enthronements, investitures, and imperial weddings.The original hall was built in 1421 during the Ming dynasty, destroyed seven times by fires during the Qing dynasty, and rebuilt for the last time in 1695–1697. After a reconstruction in the 16th century, the dimensions of the hall were reduced from around 95 by 48 metres (312 ft × 157 ft) to its present measurements, 65 by 37 metres (213 ft × 121 ft). Inability to find sufficiently large logs was cited as the cause for this change.

The Hall of Central Harmony (Chinese: 中和殿; pinyin: Zhōng Hé Diàn; Manchu: ᡩᡠᠯᡳᠮᠪᠠ ᡳ ᡥᡡᠸᠠᠯᡳᠶᠠᠮᠪᡠᡵᡝ ᡩᡝᠶᡝᠨ dulimba-i hūwaliyambure deyen) is one of the three halls of the Outer Court of the Forbidden City, in Beijing, China, along with the Hall of Supreme Harmony and Hall of Preserving Harmony. It is smaller than the other two halls, and is square in shape. It was used by the Emperor to prepare and rest before and during ceremonies.

The Palace Museum (Chinese: 故宫博物院; pinyin: Gùgōng Bówùyùan) is a huge national museum complex housed in the Forbidden City at the core of Beijing, China. With 720,000 square metres (180 acres), the museum inherited the imperial royal palaces from the Ming and Qing dynasties of China and opened to the public in 1925 after the last Emperor of China was evicted. Constructed from 1406 to 1420, the museum consists of 980 buildings. It is home to over 1.8 million pieces of art, mostly from the imperial collection of the Ming and Qing dynasties. The 20th century saw its expansion through new acquisitions, transfers from other museums, and new archaeological discoveries. According to the Beijing Evening Post, the museum has seen more than 17 million visitors in 2018, which would make it the world's most visited museum. It has an average of 15 million visitors annually since 2012. Due to this increased pressure, the management has set a daily limit for visitors of 80,000 since 2015 to protect the structure and the experience.

The Hall of Preserving Harmony (Chinese: 保和殿; pinyin: Bǎo Hé Diàn; Manchu: ᡝᠨᡨᡝᡥᡝᠮᡝ ᡥᡡᠸᠠᠯᡳᠶᠠᠮᠪᡠᡵᡝ ᡩᡝᠶᡝᠨ enteheme hūwaliyambure deyen) is one of the three halls of the Outer Court of the Forbidden City in Beijing, China, along with the Hall of Supreme Harmony and Hall of Central Harmony. Rectangular in plan, the Hall of Preserving Harmony is similar to, but smaller in scale than, the Hall of Supreme Harmony. It was used for rehearsing ceremonies, and was also the site of the final stage of the Imperial examination. Both of these halls also feature imperial thrones, though to a slightly smaller scale than that in the Hall of Supreme Harmony.

The Gate of Glorious Harmony (simplified Chinese: 熙和门; traditional Chinese: 熙和門; Manchu: ᡳᠵᡳᠰᡥᡡᠨ ᡥᡡᠸᠠᠯᡳᠶᠠᠮᠪᡠᡵᡝ ᡩᡠᡴᠠ ijishūn hūwaliyambure duka), or the Gate of Xihe, Xihemen is a gate sits on the central road of the outer court of the Forbidden Palace. It is on the outer side of the Gate of Supreme Harmony, and eastern to the Gate of Blending Harmony It was first built on the 18th year of Yongle (1420) and was named Gate of Right Obedience. The current building is built on the 23rd year of Qianlong (1758).

The Imperial Ancestral Temple, or Taimiao (simplified Chinese: 太庙; traditional Chinese: 太廟; pinyin: Tàimiào) of Beijing, is a historic site in the Imperial City, just outside the Forbidden City, where during both the Ming and Qing Dynasties, sacrificial ceremonies were held on the most important festival occasions in honor of the imperial family's ancestors.The temple, which resembles the Forbidden City's ground plan, is a cluster of buildings in three large courtyards separated by walls. The main hall inside the temple is the Hall for Worship of Ancestors, which is one of only four buildings in Beijing to stand on a three-tiered platform, a hint that it was the most sacred site in imperial Beijing. It contains seats and beds for the tablets of emperors and empresses, as well as incense burners and offerings. On the occasion of large-scale ceremonies for worship of ancestors, the emperors would come here to participate. Flanking the courtyard in front of this hall are two long, narrow buildings. These were worship halls for various princes and courtiers. The Western Wing housed the spirit tablets of meritorious courtiers, while the Eastern Wing enshrined various princes of the Ming or Qing dynasty. Behind the Hall for Worship of Ancestors are two other main halls. The first was built in 1420 and used to store imperial spirit tablets. By the 1920s, the Imperial Ancestral Temple and its surrounding spaces had become a public park, and that public park today has been expanded from its original size and is now also known as the Working People's Cultural Palace (劳动人民文化宫; pinyin: Láodòng Rénmín Wénhuà Gōng). This park was extended based on the Imperial Ancestral Hall site, and the park is located east of Tiananmen, while the Zhongshan Park lies to the west. These two parks along with Beihai Park and Jingshan and several other parks have a deep historic tie with the Forbidden City.

The Beijing Shejitan (simplified Chinese: 北京社稷坛; traditional Chinese: 北京社稷壇), also known as the Altar of Earth and Harvests or the Altar of Land and Grain, is a Confucian altar located in the Zhongshan Park in Beijing, China. Built in 1421 by the Ming dynasty, it was where national soil and grain ceremonies were conducted during the Ming and Qing dynasties. The Shejitan is also located in the opposite geometric location to the Imperial Ancestral Temple. Along with the Imperial Ancestral Temple, the Temple of Agriculture, and the Temple of Heaven, it is one of Beijing's main imperial temples.