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.
Yuzhong County, under the jurisdiction of Lanzhou City, Gansu Province, is located in the central part of Gansu Province, near Qilihe and Chengguan District to the west, Anding District of Dingxi City to the east, Lintao County to the southwest, Pingchuan District of Baiyin City to the north, and Jingyuan County and Huining County to the northeast; it is high in the south and low in the middle, with a temperate continental climate, with a total area of 3301.64 square kilometers, and has jurisdiction over 8 towns and 15 townships. In 2017, there are 13 ethnic minorities with a registered population of 469083. Yuzhong County passes through the ancient Silk Road in three ways. Xinglong Mountain is a national 4A scenic spot and a national nature reserve. Qingcheng, an ancient town, is listed as a "national historical and cultural town" because of its historical and cultural relics and the ancient buildings of the Ming and Qing dynasties. The traffic in the county is more developed, such as Lanxin second Line, Lanyu Railway, Baolan passenger Special Railway, etc.