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.
Pingli County, which belongs to Ankang City, Shaanxi Province, is located between 31 °37mm in north latitude and 109 °- 109 °33' in east longitude. It is bordered by Zhuxi County in Hubei Province in the east, Chengkou County in Chongqing in the south, Langao County in Ankang City, Shaanxi Province in the west, and Ankang City, Hanbin District, Xunyang County in Shaanxi Province in the north, and at the junction of Shaanxi, Hubei and Chongqing provinces in the north. The county seat is 60 kilometers away from the central city of Ankang City and 263 kilometers away from the provincial capital Xi'an. Pingli County is the "hometown of Nu WA". With 150000 mu of ecological tea garden and 38000 mu of gynostemma pentaphyllum, Pingli County is the first county in the production of gynostemma pentaphyllum and a famous tea county in Northwest China. In 2018, Pingli County had jurisdiction over 11 towns, with a regional gross domestic product (GDP) of 9.962 billion yuan, including 1.069 billion yuan for the primary industry.