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.
Xihe County belongs to Longnan City, Gansu Province, located in the southeast of Gansu Province, the northern end of Longnan City, because of the ancient West and the state and the county name. In the Western Han Dynasty, he bought Wudu County in Luoyu (now Luoyu Town), Qiu Chi State in the two Jin dynasties, South Qinzhou in Luoyu in the Northern Wei Dynasty, and changed it into a state in the Western Wei Dynasty. After many changes, Minzhou was changed to Xihe Prefecture in the Southern Song Dynasty, and Xihe Prefecture became a county in the Hongwu period of the Ming Dynasty. Xihe County has jurisdiction over 16 towns and 4 townships, covering an area of 1861 square kilometers and a total population of 437633 (2015). Xihe County is located in the south of the West Qinling Mountains and the upper reaches of the Jialing River system in the Yangtze River Basin. It is a warm temperate semi-humid climate with four distinct seasons. Xihe County is known as the "precious rehabilitation zone". The natural resources are mainly represented by antimony ore, lead-zinc ore and Pinellia ternata and Zanthoxylum bungeanum.