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.
Wubao County is located in the northeast of Shaanxi Province, southeast of Yulin City. Relying on Jia County in the north, Suide in the west and the Yellow River in the east, it faces Linxian County and Liulin in Shanxi Province. With a total area of 428 square kilometers, cultivated land of 12700 hectares and a total population of 84300 (2016), Wubao County is the traffic hub of Qin and Jin dynasties. It has been a strategic area for military strategists since ancient times, and it is the bridgehead from northern Shaanxi to East and North China. Wubao County is one of the five sericulture base counties in Shaanxi Province, and the output and income of red jujube ranks first in the city. Four Yellow River bridges connect Qin and Jin provinces, and Xian-Song Highway crosses the border. Places of interest include the second moraine of the Yellow River-Wubao Datong moraine, Wubao Stone City, Taiping Temple, Liuqing former residence, Henggou Hot Spring and so on. Under the jurisdiction of Songjiachuan Street Office, Koujiayuan Town, Xinjiagou Town,