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.
Raohe County, which belongs to Shuangyashan City, Heilongjiang Province, is located in the northeast border of Heilongjiang Province, the middle and lower reaches of the Wusuli River, across the river from Russia, the border is 128 kilometers long. The geographical coordinates are 46 °30 °44 "~ 47 °34 °26" N and 133 °07 "26" ~ 134 °20 "16" E respectively. The south is surrounded by the Wanda Mountains and the north is supported by the Sanjiang Plain. The county covers an area of 6765 square kilometers. In 2017, Raohe County has a population of 150000 and has jurisdiction over 4 towns and 5 townships, including 5 state-owned farms and 11 forest industrial forest farms. There are 27 ethnic groups in the county, including 1 Hezhe Township and 3 Korean villages. The county government is stationed in Raohe Town. In the first year of Xuantong of the Qing Dynasty (1909), Shixian County was founded, in 1949 (1925).