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.
Baiyu County, which belongs to Ganzi Tibetan Autonomous Prefecture of Sichuan Province, is located in the transitional zone from Qinghai-Tibet Plateau to Yunnan-Guizhou Plateau. It belongs to the northern section of the Hengduan Mountains and the east bank of the upper reaches of the Jinsha River. It is located between 98 degrees 36 minutes east longitude to 99 degrees 56 minutes and 30 degrees 22 minutes to 31 degrees 40 minutes north latitude. It is bordered by Xinlong County to the east, Batang and Litang counties to the south, Gongjue and Jiangda counties in Tibet to the west, and Ganzi County and Dege County to the north. By the end of 2011, Baiyu County had an area of 10591 square kilometers and had jurisdiction over 1 town and 16 townships with a total population of 53600, a birth rate of 8.64 ‰ and a natural population growth rate of 6.67 ‰. In 2011, Baiyu County achieved a GDP of 869 million yuan, an increase of 9.7% over 2010.