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.
Yixian, which belongs to Baoding City, Hebei Province, is located in the middle of Hebei Province. It has jurisdiction over 9 towns, 17 townships and 1 nationality township. Geographical coordinates 114o 51 & #39;-115 °37 & #39;, 39 °02 & #39;-39 °35 & #39;. The total area of Yixian County is 2534 square kilometers. In 2018, the total population of Yixian County is 581000, including 22 ethnic groups such as Han, Manchu, Hui and Mongolia. On September 29, 2018, the Hebei provincial government formally approved Yixian to withdraw from the poverty-stricken county sequence. In September 2019, it was selected into the first batch of national global tourism demonstration zones. In November 2019, he was selected into the list of the second batch of counties (districts) for the construction of a water-saving society.