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.
Mado, which means "the source of the Yellow River" in Tibetan, is located in the northwest of Guoluo Tibetan Autonomous Prefecture in Qinghai Province, in the south of Qinghai Province, in the northwest of Guoluo Tibetan Autonomous Prefecture, and belongs to Guoluo Tibetan Autonomous Prefecture. Mado County is bordered by Dulan County, Haixi Mongolian Autonomous Prefecture in the north, Xinghai County in Hainan Tibetan Autonomous Prefecture and Maqin County in Guoluo Tibetan Autonomous Prefecture in the east, Dari County in Guoluo Tibetan Autonomous Prefecture and Shiqu County in Sichuan Province in the south, Qumalai County in Yushu Tibetan Autonomous County in the west, and Yushu Tibetan Autonomous Prefecture in the southwest. It is 207km wide from north to south and 228km long from east to west, with a total area of 25253 square kilometers. The average altitude is more than 4200 meters, and the annual average temperature is-4 ℃, which belongs to alpine steppe climate. Lake Eling, Lake Zaling, Lake Donggezona, Xingjinghai,