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.
Huadu District, Guangzhou Municipal District, is located in the south-central part of Guangdong Province, the north of the Pearl River Delta and the north of Guangzhou. With a total area of 970.04 square kilometers, the region is located in longitude 112o 57707 "~ 113o 28010km east and latitude 23 °14057" ~ 23 °37818 "north. It is connected with Conghua District in the east, Sanshui District and Nanhai District in Foshan City in the west, Baiyun District in the south and Qingcheng District in Qingyuan City in the north. Guangzhou has "North Gate", "back Garden", "Leather Capital of China" and other laudatory names. Beijing-Guangzhou Railway and Wuhan-Guangzhou passenger dedicated Line run through the whole territory. Beijing-Hong Kong-Macao Expressway, Guang-Qing Expressway, Airport Expressway, Guang Le Expressway, Zhaohua Expressway, Guangzhou second Ring Road, North second Ring Road and Jiebei Expressway constitute the north-south and east-west highway network in Huadu. Liuxi River in the east and Bajiang River in the west