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.
Xuanhan County, which belongs to Dazhou City, Sichuan Province, is located at the southern foot of Dabashan Mountain in the northeast of Sichuan Basin, between longitude 107 °22, longitude 108 °32, longitude 31 °06, latitude 31 °49, Chengkou County, Chongqing in the northeast, Kaizhou District, Chongqing in the east, Kaijiang County in the south, Dachuan District, Tongchuan District and Pingchang County in the west, and Wanyuan County in the north. Located in the joint of Sichuan, Chongqing, Hubei and Shaanxi, it is a satellite city of Dazhou. The county seat is 32 kilometers away from Dazhou City and 42 kilometers from Dazhou Airport. Xiang-Yu Railway, Chongqing-Shaanxi Expressway and Dawan Expressway pass through the border, only 2.5 hours to Chongqing. Xuanhan County covers an area of 4271 square kilometers, 31 towns, 19 townships and 4 ethnic townships. In 2016, the total registered population was 1.3234 million (permanent resident population 1.0315 million).