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.
Huazhou District, which belongs to Weinan City, Shaanxi Province, was called Zheng County, Xianlin and Wuxiang in ancient times, and was renamed Huaxian in 1913. It is located at the northern foot of Qinling Mountains, the east of Guanzhong Plain and the south bank of Weihe River, more than 70 kilometers away from the ancient capital Xi'an in the west and 29 kilometers away from Huashan, a national scenic spot in the east. Huayin City is bordered by Huayin City in the east, 23 kilometers away from Weinan District in the west, Qinling Mountains and Luonan County and Lantian County in the south, and Weihe River and Dali County in the north. Huazhou District covers an area of 1139.5 square kilometers, with a total population of 370000 (July 2018), and has jurisdiction over 1 street and 9 towns. In 2017, the GDP of Huazhou District reached 9.498 billion yuan, an increase of 8.7%. With Qinling Mountains in the south and Weihe River in the north, the terrain is high in the south and sandwiched in the middle, with an area of 410000 mu of arable land and mountains and highlands in the territory.