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.
Wanyuan City, which belongs to Dazhou City, Sichuan Province, gets its name because it is located in Wanqingchi and the source of Zhujiang River. it is located in the northeast of Sichuan Province, the hinterland of Dabashan Mountain, the junction of Sichuan, Shaanxi and Chongqing, and the confluence of seven counties and cities. it is the dividing line of climate between the north and south of China and the watershed of Jialing River and Han River. By the end of 2018, Wanyuan City had jurisdiction over 52 townships, covering an area of 4065 square kilometers, with a total population of 573600. Wanyuan City was established in July 1993 and has obvious geographical advantages. it is the main passage of land traffic out of Sichuan Province. It is known as the "lock key of Qinchuan". It is crossed by trunk lines such as Xiang-Yu Railway, Baomao Expressway, National Highway 210 and 347. Wanyuan City is known as "the Source of Wanbao". It is one of the three selenium-rich belts in China and the only natural selenium-rich area in Sichuan Province.