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.
Huanxian County, which belongs to Qingyang City, Gansu Province, is located in the east and northwest of Gansu Province, between 36 °1 & #39;-37 °9 & #39;, east longitude 106 °21 & #39;-107 °44 & #39;, east of Huachi County of Gansu Province and Dingbian County of Shaanxi Province, Qingcheng and Zhenyuan County of Gansu Province to the south, Yuanzhou District and Tongxin County of Guyuan City of Ningxia in the west, and Yanchi County of Ningxia to the north. It is about 124km wide in the east and west and 127km in length from north to south, with a total area of 9236 square kilometers. As of 2017, the total population is 361000, mainly Han nationality, including Hui, Mongolian, Tibetan, Uygur, Miao, Yi, Zhuang, Buyi, Korean, Manchu and Dong.