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.
Dazhou, a prefecture-level city of Sichuan Province, is located in the east of Sichuan Province. it has a history of more than 1900 years since the establishment of the county in the Eastern Han Dynasty. With an area of 16591 square kilometers, Dazhou has jurisdiction over 2 municipal districts, 4 counties and 1 county-level city, plus a high-tech zone with a total population of 6.9 million (as of December 2018, the population of the central district of Dazhou was 1.025 million). Dazhou is a populous city, an agricultural city, a resource-rich city, an industrial town, a transportation hub and an old revolutionary base in Sichuan Province. Luojiaba site and Chengba site in Dazhou are the birthplace of the ancient Ba people and Ba Culture Center in the upper reaches of the Yangtze River. It is the center of Baqu culture in Sichuan, one of the three major gas fields in the country and the starting point of the national "Sichuan gas transmission from east". It is a comprehensive national natural gas.