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.
Yunnan Province, or Yunnan for short, is one of the 23 provinces in China, located in the southwest and the capital of Kunming. Bounded by 21 °8 degrees north latitude, 29 °15 degrees north latitude, 97 °31 degrees east longitude, 106 °11 degrees east longitude, Guizhou and Guangxi in the east, Sichuan in the north, Tibet in the northwest, Myanmar in the west, Laos and Vietnam in the south, Yunnan Province has a total area of 394100 square kilometers. The topography of Yunnan Province is high in the northwest and low in the southeast, descending step by step from north to south, which belongs to the mountainous plateau topography, and the mountain area accounts for 88.64% of the total area of the province. The topography is bounded by the wide valleys of Yuanjiang Valley and the southern section of Yunling Mountains, and is divided into east and west topographic areas. The eastern part is the plateau of eastern and central Yunnan, which is part of the Yunnan-Guizhou Plateau, characterized by gently undulating low mountains and round hills.