Direct-controlled municipality in the context of "Counties of China"

The Beijing Subway is the rapid transit system of Beijing Municipality that consists of 29 lines including 24 rapid transit lines, two airport rail links, one maglev line and two light rail tram lines, and 524 stations. The rail network extends 879 km (546 mi) across 12 urban and suburban districts of Beijing and into one district of Langfang in neighboring Hebei province. In December 2023, Beijing Subway became the world's longest metro system by route length, surpassing the Shanghai Metro. With 3.8484 billion trips delivered in 2018 (10.544 million trips per day) and single-day ridership record of 13.7538 million set on July 12, 2019, the Beijing Subway was the world's busiest metro system in the years immediately prior to the outbreak of the COVID-19 pandemic.

The Beijing Subway opened in 1971 and is the oldest metro system in 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 December 15, 2024, with the openings of Line 3 and Line 12 and an extension of the Changping line.

Counties (县) are found in the third level of the administrative hierarchy in provinces and autonomous regions and the second level in municipalities and Hainan, a level that is known as "county level" and also contains autonomous counties, county-level cities, banners, autonomous banners and city districts. There are 1,355 counties in mainland China out of a total of 2,851 county-level divisions.

The term xian is sometimes translated as "district" or "prefecture" when put in the context of Chinese history.

Huế, formerly Thừa Thiên Huế province, is the southernmost coastal city in the North Central Coast region, approximately in the center of the country, and an educational, medical, scientific, and cultural hub of Vietnam. It borders Quảng Trị to the north, Đà Nẵng to the south, Salavan and Sekong of Laos to the west and the South China Sea to the east. As one of the country's six direct-controlled municipalities, it falls under the administration of the central government.

Huế has 128 km of coastline, 22,000 ha of lagoons and over 200,000 ha of forest. The city is located in the middle of the North Central and South Central regions (including the South Central Coast and Central Highlands), and is transitional in many aspects: geology, climate, administrative division and local culture.

The Tujia (Northern Tujia: Bifjixkhar / Bifzixkar, IPA: /bi˧˥ dʑi˥ kʰa˨˩/ /pi˧˥ tsi˥ kʰa˨˩/, Southern Tujia: Mongrzzir, /mõ˨˩ dzi˨˩/; Chinese: 土家族; pinyin: Tǔjiāzú; Wade–Giles: Tu-chia-tsu) are an ethnic group and, with a total population of over 9 million, the seventh-largest officially recognized ethnic minority in the People's Republic of China. They live in the Wuling Mountains, straddling the common borders of Hunan, Hubei and Guizhou Provinces and Chongqing Municipality.

The endonym Bizika means "native dwellers". In Chinese, Tujia literally means "local families", in contrast to the Hakka (客家; Kèjiā), whose name literally means "guest families" and implies migration.