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.
Dechang County, which belongs to Liangshan Yi Autonomous Prefecture of Sichuan Province, lies between 101o54-#39;-102 °29-#39;, north latitude 27 °05-#39;-27 °36-#39;, covering an area of 2284 square kilometers. It is located in the Anning River Valley, the eastern edge of the Kangzang-Tibet Plateau in the Hengduan Mountains, adjoining Huili and Miyi County in the south, Yalong River and Yanyuan County in the west, Xichang City in the north, Luoji Mountain ridge and Puge County in the east, and Ningnan County in the southeast, with a total area of 2288 square kilometers. Dechang system has a history of more than 2000 years, and it is the necessary place of the southern Silk Road "reaching Beijing in the north and Mengzhao in Nantong". It contains rich "Phoenix culture", "nine palaces and eighteen temples", Buddhism and Taoism culture, Lisu people.