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.
Chaling County, which belongs to Zhuzhou City, is located in the east of Hunan Province. It extends to Changsha in the north, Guangzhou in the south, Hengyang in the west and Jiangxi in the east, covering an area of 2500 square kilometers (2013). It is located between longitude 113 °20 "113 °65" east and latitude 26 °30 "27 °7 'north. It belongs to the humid climate of subtropical monsoon. Chaling County is the only administrative county named after tea in Chinese history. Because it is located in the "shadow of the tea mountain", and the first ancestor of the Chinese nation, Yan Emperor Shennong, was buried at the end of the tea village. Because of the Southern Song Dynasty county magistrate Liu Zimai cast iron rhinoceros town river demon and has the reputation of "rhinoceros city". Chaling County is one of the six counties in the Jinggangshan revolutionary base area, and the key counties and model counties in the Hunan-Jiangxi revolutionary base area are the first red political power in China created by Mao Zedong. In August 2018, Hunan Provincial Government approved the reply.