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.
Yang County, which belongs to Hanzhong City, Shaanxi Province, is located in the southwest of Shaanxi Province, the eastern edge of Hanzhong Basin, Qinling Mountains in the north, Bashan County in the south, Foping and Shiquan County in the east, Xixiang County in the south, Chenggu County in the west, Liuba County and Taibai County in the north. It is between 10711 miles east longitude 108 °33 km east longitude, 33 °02 north latitude 33 °43 'north latitude, 0 °52 miles east-west span, 92.8km horizontal distance, 0 °41km north-south span and 72.7km horizontal distance, with a total area of 3206 square kilometers. The Han River runs through Yangxian County from west to east, belonging to the north subtropical continental monsoon climate, with four distinct seasons, sufficient light and a mild and humid climate. In November 2013, the AQSIQ formally approved the establishment of a well-known brand of the national crested ibis ecological protection industry in Yang County, Hanzhong City, Shaanxi Province.