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.
Gaoqing County, which belongs to Zibo City, Shandong Province, is located in the Lubei Plain and the northern end of Zibo City, with a total area of 831 square kilometers. As of 2018, Gaoqing County has a total registered population of 369900; there are 25 ethnic minorities such as Miao, WA, Yi, Zhuang, Hui, Manchu and Mongolian in Gaoqing County. As of 2018, Gaoqing County has jurisdiction over 2 streets and 7 towns, and the county government is stationed at 81 Huanghe Road, Tianzhen Street. In 37 (1948) April, Gaoyuan, Qingcheng two counties merged into Gaoqing County, Li CPC Bohai Office. On January 1, 1990, Gaoqing County was assigned to Zibo City. Gaoqing County is located in the south of North China Plain depression (Ⅰ structure) and Jiyang depression (Ⅱ structure). It is a part of a large sedimentary basin. The terrain is high in the west and low in the east, tilting from northwest to southeast.