The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With 8,472 square miles (21,940 km2) and a population of more than 2.2 million people, it is the second-largest metropolitan area centered in Missouri (after Greater St. Louis) and is the largest metropolitan area in Kansas, though Wichita is the largest metropolitan area centered in Kansas. Alongside Kansas City, Missouri, these are the suburbs with populations above 100,000: Overland Park, Kansas; Kansas City, Kansas; Olathe, Kansas; Independence, Missouri; and Lee's Summit, Missouri.
Maqu County, which belongs to Gannan Tibetan Autonomous Prefecture of Gansu Province, is located in the southwest of Gannan Tibetan Autonomous Prefecture of Gansu Province, the eastern end of the Qinghai-Tibet Plateau, the junction of Gansu, Qinghai and Sichuan provinces, and the first curved part of the Yellow River. It is located between longitude 100 °4545 "~ 102 °2900" east and latitude 33 °0630" ~ 34 °3015 "north, bordering Luqu County of Benzhou by Xidianshan in the northeast and Ruoergai County and Aba County of Aba Tibetan and Qiang Autonomous Prefecture in Sichuan Province in the southeast. Maqu County has a total area of 10190 square kilometers and a total population of 54900 (2011), of which Tibetans account for 2/3, with an average elevation of 3700 meters. Maqu belongs to the Qiang nationality in ancient times. After Tubo unified the Qinghai-Tibet Plateau in 663 AD, it became a nomadic place for Tibetans. In 2011, Maqu