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.
Menyuan Hui Autonomous County is located in the northeast of Qinghai Province, under the jurisdiction of Haibei Tibetan Autonomous Prefecture, in the east of Haibei Tibetan Autonomous Prefecture and adjacent to Gansu Province in the east and north. It is 150 kilometers away from the provincial capital Xining and 250 kilometers away from Haiyan County, the capital of Haibei Prefecture. The total area is 6896 square kilometers. Menyuan County was established in 1929, Menyuan Hui Autonomous region was established in 1953, and changed to Menyuan Hui Autonomous County in 1955. In 2013, the GDP of Menyuan Hui Autonomous County reached 292 million yuan. Hui is the main ethnic group, accounting for about 40% of the total population, as well as Han, Tibetan, Turkish, Mongolian, Salar and other ethnic groups. The total population is 155800 (2013). The original name of Menyuan County was "Xianyuan" (Xi, m é n). Because the writing of the word "Qing" was too complicated, it was unified and simplified.