Wichita (/ˈwɪtʃɪtɔː/ WITCH-ih-taw) is the largest city in the U.S. state of Kansas and the county seat of Sedgwick County. As of the 2020 census, the population of the city was 397,532. The Wichita metro area had a population of 647,610 in 2020. It is located in south-central Kansas on the Arkansas River.
Wichita began as a trading post on the Chisholm Trail in the 1860s and was incorporated as a city in 1870. It became a destination for cattle drives traveling north from Texas to Kansas railroads, earning it the nickname "Cowtown". Wyatt Earp served as a police officer in Wichita for around one year before going to Dodge City.
Yongchang County, which belongs to Jinchang City, Gansu Province, is located in the northwest of Gansu Province, in the east of Hexi Corridor, the northern foot of Qilian Mountain and the southern edge of Alashan platform. It is bordered by Wuwei to the east, Jinchuan to the north, Shandan to the west and Sunan to the south. The geographical coordinates are 101 °04 east longitude 102 °43 mi, 37 °47 mi 38 °39'N. The longest distance from east to west is 144.8 km, and the widest distance from north to south is 144.55 km, with a total area of 7439.27 square kilometers. As of 2014, Yongchang County has jurisdiction over 6 towns and 4 townships, with a total of 111administrative villages, 917 village groups and 10 communities, with a total population of 235300 (by the end of 2017), mainly Han nationality, and ethnic minorities such as Mongolian, Hui and Pan. In 2017, Yongchang County realized the regional gross domestic product.