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.
Daan District, which belongs to Zigong City, Sichuan Province, is located in the south of Sichuan Basin and northeast of Zigong City, between latitude 29 °19030 "- 29 °28053" north and longitude 104408 "- 1050414" east, covering an area of 398.81 square kilometers. Daan District belongs to the subtropical humid monsoon climate type, which is characterized by abundant rainfall, rich heat, long frost-free period and four distinct seasons. As of 2018, Daan District has jurisdiction over 11 towns, 1 township and 4 streets, and the district government is stationed in Longjing Street. By the end of 2017, the total number of households in Da'an District was 160500, with a total registered population of 440000. Daan District originally belongs to Fushun County, the Republic of China 28 years (1939) under the jurisdiction of Zigong City. In 33 (1944), by