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.
Huinong District, which belongs to Shizuishan City, Ningxia Hui Autonomous region, is located at the northernmost end of Ningxia, bordering the Yellow River in the east, Helan Mountain in the west and Wuhai City in Inner Mongolia in the north. It is the north gate of Ningxia, between longitude 106.70 °- 106.80 °east and latitude 39.20 °- 39.30 °north. As of August 2019, Huinong District has jurisdiction over 3 towns and 3 townships, with a total population of 200000 people and a total area of 1254 square kilometers. Huinong, derived from the name appointed by Emperor Yongzheng for Huinong Canal, contains the meaning of giving benefits to the people. Qin is under the jurisdiction of Beidi County. In April 2004, the Shizuishan District of Shizuishan City and Huinong County were abolished and Huinong District was established. The geomorphology of Huinong District is composed of three units: Helan Mountain hilly land, alluvial inclined plain and Yellow River alluvial plain. Huinong District belongs to the middle temperate zone.