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.
Qingfeng County is located in the northeast of Henan Province, at the junction of Hebei, Shandong and Henan provinces, adjoining Shenxian County of Shandong Province in the east, Puyang City in the south, Neihuang County in Anyang City in the west, Nanle County in the north, and Wei County in Hebei Province across the Wei River in the northwest. Qingfeng County, which belongs to Puyang City, has jurisdiction over 6 towns, 11 townships and 503 administrative villages, with a total population of 721000 (2017) and a total area of 828 square kilometers. it is one of the 47 counties with expanded powers in Henan Province. Qingfeng was called Dun Qiu in ancient times. Cao Cao had appointed Dunqiu during the three Kingdoms. Zhang Qingfeng, a filial son of the Sui Dynasty, was renamed Qingfeng County during the Dali period of the Tang Dynasty. It is the only county in China named after the filial son. In 2009, it was named "the hometown of Chinese filial piety culture" by the China Association for Democracy and people's livelihood. Since 2014, it has won the nomination of "National civilized City",