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.
Yanyuan County, which belongs to Liangshan Yi Autonomous Prefecture of Sichuan Province, is located on the southeast edge of the Qinghai-Tibet Plateau in Sichuan Province and on the west bank of the lower reaches of the Yalong River. The geographical coordinates are: longitude 100 °42 °09 "- 102 °03 °44" east and latitude 27 °06 °31-28 °16 °31 "north. Across the Yalong River from Xichang City, Dechang County and Miyi City in the east, Yanbian County in the south, Ningyi County in Yunnan Province in the west, and Muli Tibetan Autonomous County and Mianning County in the north. As of 2012, Yanyuan County covers an area of 8398.6 square kilometers and has a population of 356000. Yanyuan County, which belongs to Sichuan Province, contains 41 kinds of mineral resources, such as salt, iron, gold, etc.; it is rich in many kinds of rare animals, such as black-crowned crane, bear, Swertia, etc., and is rich in apple, Phnom Penh melon seeds and other famous and special products, which is the apple production in southwest China.