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.
Youyu County is located in the northwest border of Shanxi Province, belonging to Shuozhou City, Shanxi Province. It is bounded by the ancient Great Wall in the north and northwest, adjacent to Liangcheng and Helinger County in Inner Mongolia, Zuoyun County, Datong City in the east, and Shanyin County and Pinglu District in the south. Youyu County is surrounded by mountains, high in the south and low in the north. The Cangtou River runs from north to south, with a width of 45.7km from east to west and 67.7km from north to south. It has jurisdiction over a provincial eco-cultural tourism development zone, four towns, six townships, one scenic spot and 288 administrative villages, with a total area of 1969 square kilometers and a total population of 115000 (total population at the end of 2017). Youyu County is rich in tourism resources, including Xiahukou Scenic spot, Youyu Spirit Exhibition Hall, Cangtou River Wetland Park and other tourist attractions. It has successively won "National AAAA tourist Scenic spot", "Chinese charm Town", and "the most worthwhile."