Colorado Springs is a home rule municipality in, and the county seat of, El Paso County, Colorado, United States. It is the largest city in El Paso County, with a population of 478,961 at the 2020 United States Census, a 15.02% increase since 2010. Colorado Springs is the second-most populous city and the most extensive city in the state of Colorado, and the 40th-most populous city in the United States. It is the principal city of the Colorado Springs metropolitan area and the second-most prominent city of the Front Range Urban Corridor. It is located in east-central Colorado, on Fountain Creek, 70 miles (113 km) south of Denver.
Ningnan County belongs to Liangshan Yi Autonomous Prefecture, located in the south and east of Liangshan Yi Autonomous Prefecture, Sichuan Province, facing the Jinsha River and Qiaojia County in Yunnan Province across the river. Ningnan County, with a total area of 1667 square kilometers, has jurisdiction over 6 towns, 19 townships, 124 villages and 819 village groups, with a total population of 189000 (2014). It is a mountainous agricultural county dominated by the Han nationality, Yi, Buyi, Hui, Tibet, Mongolia and other ethnic groups. In September 2016, the State Council approved Ningnan County as a national key ecological functional area.