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.
Daye, a county-level city under the jurisdiction of Hubei Province, administered by Huangshi City, is located in the southeast of Hubei Province, the south bank of the middle and lower reaches of the Yangtze River, the hinterland of Hubei "Metallurgical Corridor", an important part of Wuhan city circle, with a total area of 1566.3 square kilometers. Daye is the birthplace of Chinese bronze culture. More than 3000 years ago, Chinese ancestors mined and smelted copper in Daye, creating a bronze civilization. The Tonglushan ancient copper mine site in the territory is known as "the ninth wonder of the world". It has been listed in the National Archaeological site Park project and the preliminary list of "World Cultural Heritage", and has been awarded the Guinness record of "Ancient Copper Mine with the longest continuous Mining time". Tonglushan Sifangtang site was selected as one of the Top Ten Archaeological discoveries in China in 2015. As of