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.
Huayuan County, which belongs to Xiangxi Tujia and Miao Autonomous Prefecture of Hunan Province, is located in the west of Hunan Province, in the middle of Wuling Mountains, at the junction of Hunan, Guizhou and Chongqing. In 2016, Huayuan County had jurisdiction over 3 townships and 9 towns. Huayuan County has a total population of 312700, with a total area of 1109.35 square kilometers. The proven reserves of Huayuan Manganese Mine ranks the second in Hunan Province, the second in China, and the second in Hunan Province and the third in China, with the reputation of "Oriental Manganese Capital" and "hometown of Nonferrous Metals". Huayuan is an old revolutionary base county and a key county in national poverty alleviation and development work. There are the sites of ancient human activities 100000 years ago, the ancient battlefield sites of Qianjia Miao uprising, Shen Congwen's border town tea cave and other cultural landscapes; there are also large and small Longdong waterfalls, border town tea cave scenic spots, ancient Miao River ruins