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.
Anhui, abbreviated as "Anhui", named after the first words of Anqing and Huizhou at that time, is a provincial administrative region of the people's Republic of China. Hefei, the provincial capital. Located in East China, Anhui is bounded by 114o 54km east longitude, 119o 37km east longitude and 29o 41mm north latitude, Jiangsu and Zhejiang provinces in the east, Henan and Hubei provinces in the west, Jiangxi province in the south, Shandong province in the north, and Anhui province covering a total area of 140100 square kilometers. Anhui Province is located in East China, near the Yangtze River, with 800 miles of urban agglomeration along the Yangtze River and the Wanjiang Economic Belt, with the Yangtze River waterway inside and the economic radiation of the coastal areas on the outside. The terrain is composed of plains, hills and mountains; it spans the three major river systems of the Huaihe River, the Yangtze River and the Qiantang River. Anhui Province is located in the transitional zone between warm temperate zone and subtropical zone. The north of the Huaihe River has a warm temperate semi-humid monsoon climate.