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.
Dingan County is located in the central northeast of Hainan Island, longitude 110o 7km east, latitude 19 °13km, north latitude 19 °13km, Wenchang City to the east, Chengmai County to the west, Qionghai City to the southeast, Tunchang County to the southwest, across the river to the north and Qiongshan District of Haikou City to the north, 45.50km from east to west, 68km from north to south, 251.50 km from north to south, and 251.50 km from north to south. The population of the county is 310000, covering an area of 1189 square kilometers. Ding'an County has the geographical location of facing the air and the sea, and has the advantages of developing tropical high-efficiency agriculture, high-tech industry, warehousing industry, commercial and residential industry and trade projects. It is the birthplace of Qiong Opera and has a large number of celebrities. Known as the folk spread of "no stable opera troupe", known as Hainan's "hometown of Qiongju Opera", it was awarded by the Ministry of Culture in November 2011.