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.
Huachi County, which belongs to Qingyang City, Gansu Province, is located in the east of Gansu Province and northeast of Qingyang City, bordering Zhidan, Wuqi and Dingbian in Shaanxi Province in the northeast, and Huanxian, Qingcheng and Heshui in the southwest. It is located between longitude 107 °29 "108 °33" east and latitude 36 °07 "36 °51 'north. It has jurisdiction over 4 towns and 11 townships, with a total land area of 3776 square kilometers and a total population of 138000 (resident population in 2016). In 2013, the GDP of Huachi County reached 9.2 billion yuan. Huachi County has been awarded as "National Scientific and technological Progress County", "National Advanced County in surveying and Mapping Management", "Provincial double support Model County", "Provincial Greening Model County", "Provincial civilized County" and "Provincial Health County" by the state and province. December 2016, listed as the third batch