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.
Huixian City belongs to Xinxiang City, Henan Province. Huixian City is located in the contiguous area of Henan and Jin, with Taihang in the north and the Yellow River in the south. Huixian City, with a total area of 2007 square kilometers and a population of 840000, has jurisdiction over 2 streets, 11 towns and 9 townships, with a total of 536 administrative villages. It is the first batch of pilot counties of new agricultural insurance, advanced scientific and technological progress, advanced culture and "famous green counties in China"; key counties for urbanization development, economic expansion, opening to the outside world and intellectual property pilot counties in Henan Province. the comprehensive strength of county economy ranks 28th among the top 100 counties in six provinces in central China. Huixian City is located in the northwest of Henan Province, between latitude 35 °17 "35 °50" N and longitude 113 °20 "113 °57'E. it is located at the junction of Henan and Jin provinces, Lingchuan County in the west, Linzhou City and Shanxi Province in the north.