San Antonio (/ˌsæn ænˈtoʊnioʊ/ SAN an-TOH-nee-oh; Spanish for "Saint Anthony"), officially the City of San Antonio, is a city in Texas, United States. The city is the seventh-most populous in the United States, the second-largest in the Southern United States, and the second-most populous in Texas. It is the 12th most-populous city in North America, with 1,434,625 residents in 2020.
Founded as a Spanish mission and colonial outpost in 1718, the city in 1731 became the first chartered civil settlement in what is now present-day Texas. The area was then part of the Spanish Empire. From 1821 to 1836, it was part of the Mexican Republic. It is the oldest municipality in Texas, having celebrated its 300th anniversary on May 1, 2018.
Tongguan District, which belongs to Tongling City, Anhui Province, is located in the southwest of Tongling City, named after Tongguanshan. East and southeast even the suburbs, west and Congyang County across the river, north Tongling County. The total area is 135 square kilometers. Tongguan District is the north gate of "two mountains and one lake", scenic spots-- Huangshan, Jiuhua Mountain and Taiping Lake, which gathers scientific and educational resources such as Tongling College, Tongling Vocational and Technical College, and Party School of the Municipal CPC Committee. It is the forward position and important carrier for Tongling to implement the strategy of "expanding from north to east". The cultural and natural landscapes include Tianjing Lake, Tongguanshan and Wumushan, which are national 4A tourist scenic spots. In 2018, Tongguan District has jurisdiction over 2 streets and 2 towns, and has another development zone with a resident population of 407000, achieving a GDP of 45.39469 billion yuan.