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.
Luonan County, located in the southeast of Shaanxi Province, belongs to Shangluo City. Located in the south of Huashan, Huayang Pool is set up in Zhou and Huayang County is located in Qin Dynasty. It is 108 kilometers away from Xi'an. It is adjacent to Lushi and Lingbao in Henan to the east, Danfeng and Shangzhou to the south, Huazhou and Lantian to the west, Huayin and Tongguan to the north, and is known as Shaanxi's "southeast gateway". It is the only Yellow River valley county in Shangluo City and the "top ten gold medal walnut counties" in China. The forest coverage rate is above 90%. Luonan is the hometown of Chinese character culture, and the word Shengcangjie created the characters here, so Luonan is one of the birthplaces of Chinese civilization. On August 4, 2018, the Fifth Plenary session of the fourth Shangluo Municipal Committee of the Communist Party of China discussed and deliberated the opinions on abolishing the establishment of Huayang District in Luonan County. This work is being submitted to the State Council for approval in accordance with the procedures, which means that Luonan County will withdraw in the future.