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.
Anding District, which means "peaceful and stable", belongs to Dingxi City, Gansu Province. It is the seat of Dingxi Municipal Party Committee and Municipal Government. It is located in the central part of Gansu Province. It is 82.9km long from north to south and 73.3km wide from east to west, with a total area of 4225 square kilometers. The region has jurisdiction over 12 towns, 7 townships and 3 subdistrict offices, with a resident population of 430500 at the end of 2017. Anding District was built in 1096 AD (the second year of Shaosheng in the Northern Song Dynasty), named "Dingxizhai", and Dingxi County was founded in 1142 (the second year of Jin Huangtong). In September 2003, Dingxi County withdrew its county and set up a district, which was renamed as "Anding District of Dingxi City". Anding District is one of the birthplaces of the Yellow River civilization, the important town of the ancient "Silk Road" and the necessary place for the New Eurasian Continental Bridge. It is known as "Gansu throat and Lanzhou Gateway", which is far away from the provincial capital Lanzhou.