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.
Yunlian County, which belongs to Yibin City, Sichuan Province, is located in the southern margin of Sichuan Basin, the junction of Sichuan and Yunnan at the northern foot of the Yunnan-Guizhou Plateau, bordering Yunnan Yanjin, Yiliang and Weixin, and adjacent to Gao County and Gong County. Yunlian County is located in latitude 27 °50 °37 counties amptwitter, 28 °14 °14 °28 counties ampquotten, east longitude 104 °17 °17 counties amptwitter 104 °47 °20 counties amphibiquot; in between, the total area of the county is 1256 square kilometers. As a whole, the topography of Yunlian County is high in the south and low in the north, which is the transitional zone from Sichuan Basin to Yunnan-Guizhou Plateau. The main peak of the Great Snow Mountain in the southeast is 1777.2 meters above sea level; the Mutan River Valley in Tengda Town in the northeast is 368.5 meters above sea level, with a range of 1408.7 meters. The water system in the territory is vertical and horizontal, and there are rivers and streams all the year round.