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.
Mianning County, which belongs to Liangshan Yi Autonomous Prefecture of Sichuan Province, is located in the southwest of Sichuan Province, in the north of Liangshan Yi Autonomous Prefecture, adjacent to Xiaoxiangling in the east, Xichang and Yanyuan in the south, Muli and Jiulong in the west, and Bodhisattva Gang and Shimian County in the north. The total area is 4420 square kilometers. Mianning is located in the Panxi Rift Valley, and the Anning River and Nanya River originate in the territory. The Yalong River winds through the southwest and is known as the rice granary on the banks of the Anning River. It is a "major county of national grain production" and "a big county for pig transfer". More than 30 kinds of minerals have been proved to be of mining value, among which the reserves of rare earths rank second in the country. Mianning is an old revolutionary base. In 24 (1935), after the long March of the Red Army passed through Mianning, the Red Army was established to enter Sichuan.