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.
Luding County, located in the southeast of Ganzi Tibetan Autonomous Prefecture in Sichuan Province, is located in the transitional zone from Qinghai-Tibet Plateau to Sichuan Basin, bordering Tianquan and Laojing in the east, Kangding and Kowloon in the west, and Shimian County in the south. The county is 236.2 kilometers away from Chengdu and 49 kilometers away from Kangding. The county seat is 1321 meters above sea level, with 7 towns, 5 townships and 145 administrative villages within its jurisdiction, covering an area of 2165.35 square kilometers. It is inhabited by 17 ethnic groups, including Han, Tibetan and Yi, with a total population of 87065 at the end of 2017. It is a mountainous multi-ethnic county with the smallest land area, relatively high population education, the densest population and rapid economic development. it is also a regional trade center in the eastern part of Ganzi Prefecture and a supply base for agricultural and sideline products in various counties in Ganzi Prefecture. It is known as the "Dongda" of Ganzi Prefecture.