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.
Zhouqu County, which belongs to Gannan Tibetan Autonomous Prefecture in Gansu Province, is located in the south of Gansu Province and in the southeast of Gannan Tibetan Autonomous Prefecture. Zhouqu means "Longjiang" in Tibetan and gets its name from the Bailong River passing through the county. Zhouqu system began in the pre-Qin period. In the 28th year of Qin Zhaowang (279 BC), Qiangdao County was located in the northwest of Zhouqu, Xigu County was set up after liberation, Zhouqu County was renamed Longdi County in 1959, and Zhouqu County was restored in 1962. By 2016, Zhouqu County had jurisdiction over 4 towns, 15 townships, 208 administrative villages and 403 natural villages, with a total population of 142000, of which 50400 were Tibetans, accounting for 35.8%. Zhouqu County is located in the Min, Dieshan system of the West Qinling Mountains and the edge of the Qinghai-Tibet Plateau, which is a typical alpine canyon landform. "one river and two rivers (Bailong River and Gongba River)