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.
Lintong District, which belongs to Xi'an City, Shaanxi Province, is located in the east of Guanzhong Plain, Lantian County in the south, Yan Liang District in the north, Sanyuan County in Xianyang City in the northwest, Gaoling District in the west, Linwei District in Weinan City in the east, and Baqiao District in the southwest. Between longitude 109 °05 "49"-109 °27 "50" east and latitude 34 °16 "49"-34 °44 "11" north, with a total area of 915 square kilometers. The famous "eighth Wonder of the World" Qin Shihuang Terracotta Warriors and horses, the source of "Beijing time", the National time Service Center of the Chinese Academy of Sciences is located in Lintong District. From the Zhou and Qin dynasties to the Han and Tang dynasties, Lintong has always been the capital, at the center of China's political, economic and cultural activities. There are many historical heritages in the territory, including the Jiangzhai site during the Yangshao Culture period and Lishan Mountain where the beacon fire opera princes took place.