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.
Sihong County, under the jurisdiction of Suqian City, Jiangsu Province, is located in the northwest of Jiangsu Province, the lower reaches of the Huaihe River, Hongze Lake to the east and Anhui to the west, located in the cross-radiation area of the Yangtze River Delta Economic Zone and the Huaihe River eco-economic belt, with an administrative area of 2731 square kilometers and a population of 1.1 million. It is the hometown of famous wine, crab and eco-tourism in China. Sihong is the wine capital of China. Shuanggou Daqu, one of the top ten famous wines, is produced here. Sihong sits on 40% of the water surface of Hongze Lake, one of the four major freshwater lakes in China, and is embedded in the national Hongze Lake Wetland Park. Sihong gave birth to an ancient civilization. Fifty thousand years ago, the people of Xiacaowan lived here after the water and thrived. It is one of the centers of biological evolution in the Cenozoic world, and it is also one of the centers of human origin.