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.
Pingan District is one of the two municipal districts of Haidong City, Qinghai Province. Pingan County, named after Ping an Station in 1979, was changed to Pingan District in February 2015. It was the capital of Haidong District from 1979 to 2013. After Haidong was relocated and established in 2013, it is still the temporary residence of Haidong City. Ping'an District is located in the east of Qinghai Province, in the hinterland of Haidong city center, at 101 °49km east longitude and 36 °15 north latitude & #39;, faces Ledu District of Haidong City in the east, Xining City and Huangzhong County in the west, Hualong County in the south and Huazhu County in the north. By 2014, it had jurisdiction over 3 towns and 5 ethnic townships, with a total area of 769 square kilometers and a total population of 127515, mainly Han nationality, as well as 17 ethnic minorities, including Hui, Tibetan and Turkish. 2013, Ping