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.
Xiao County, a county under the jurisdiction of Suzhou City, Anhui Province, is located at the north gate of Anhui Province, at the junction of Jiangsu, Shandong, Henan and Anhui provinces, at the center of Huaihai Economic Zone, Xuzhou metropolitan area and the southeast edge of North China Plain. Known as the "thoroughfare of the four provinces", it is the node of the national implementation of overall strategies such as "Belt and Road Initiative" and "Central Plains Economic Zone" and the implementation of regional strategies such as "eastward development" and "revitalization of northern Anhui" in Anhui Province. It is bordered by Xuzhou in the east, Huaibei in the south, Lianfeng County in the north, Yongcheng and Dangshan in the northwest, Heze in Shandong Province, and Hanqiao District in Suzhou in the southeast, covering an area of 1885.3 square kilometers. Xiao County, known as Xiao Guo in ancient times, has a history of more than 6000 years of civilization and more than 3100 years of history of building the city. It is the birthplace of Han culture and filial piety culture. There are Jinzhai cultural sites, Huajia Temple sites and other Neolithic sites.