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.
Nanchong, also known as "Guocheng, Silk Capital", is a prefecture-level city in Sichuan Province and the second most populous city in Sichuan. Provincial economic deputy central city, one of the central cities of Chengdu-Chongqing economic circle, important node city of "Belt and Road Initiative" strategy, regional central city of northeast Sichuan, excellent tourist city of China, national garden city, national clean energy demonstration city, one of the top 200 cities with dense belt of southern Suigang cities and towns, and one of the top 200 charming cities with Chinese characteristics. Nanchong is located in the northeast of Sichuan Province and the middle reaches of the Jialing River, which is named because it is located in the south of the country; it has jurisdiction over 3 districts (Shunqing District, Gaoping District, Jialing District), 5 counties (Yingshan County, Xichong County, Nanbu County, Pengan County, Yilong County), escrow one county-level city (Langzhong City), household registration population 7.5902 million (2014), and an area of 12479.96k square.