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.
Xinhe County is under the jurisdiction of Xingtai City, Hebei Province, which is located in the south of Hebei Province and the north of Xingtai City. The administrative area covers an area of 366 square kilometers and has a resident population of 174300 (2016). It has jurisdiction over 2 towns, 4 townships and 169 administrative villages. The county people's government is stationed in the eastern section of Guangming Road, Xinhe Town. The ownership of the new river has been changed many times in previous dynasties, but it is not often abandoned. Tangyang County was bought in the early Western Han Dynasty, and it was called Xinhe County in the fourth year of Huangyou in the Northern Song Dynasty (AD 1052). People with lofty ideals emerged in history, such as Tian Guang, a virgin of the State of Yan, Hou Gengchun of Dongguang of the Eastern Han Dynasty, Yan Liang, a famous general of the three Kingdoms, Song Dengchun, a poet of the Ming Dynasty, and Dong Zhentang, a senior general of the Red Army. There are Tuotuo Tomb, Liu Gongdi, Ciming Temple and other historical sites in the territory. It is listed as the first batch of millennium ancient counties in Hebei Province. Xinhe County is located in the Fuyang River alluvial plain, the terrain is flat, with an average elevation of 25 meters.