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.
Zhen'an County is one of the buildings under the jurisdiction of Shangluo City, Shaanxi Province. Located in southeastern Shaanxi Province, the southern foot of Qinling Mountains, southwest of Shangluo City, Han River tributaries Qianyou River and the middle reaches of Xunhe River, 175.5 kilometers from east to west, 72.5 kilometers wide from north to south, with a total area of 3477 square kilometers. The terrain is high in the northwest, low in the southeast, with many mountains and ditches and little arable land. It is an earth-rocky mountain area with "nine mountains and half water and half divided fields". Zhenan County is a national science popularization experimental county, a national medical reform pilot county, a garden city in Shaanxi Province, and a sanitary county in Shaanxi Province. Zhenan chestnut is famous for its large color, sweet and delicious, full grains, rich nutrition and unique quality, and is known as "the hometown of Chinese chestnut". Since ancient times, Xi'an is the main road to Ankang, is the natural link between Shaanxi and Hubei, known as "Qin Chu throat". 2019