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.
Hanshan County, which belongs to Maanshan City, Anhui Province, is located on the north bank of the middle and lower reaches of the Yangtze River, east-central Anhui and the shore of Chaohu Lake. The total area is 1047 square kilometers. Hanshan has a history of more than 1300 years since the county was bought in the sixth year of Tang Wude (623). It is the hometown of Wu Chu in the Spring and Autumn period, known as Wu Tou and Chuwei. There are many tourist attractions in Hanshan, mainly Taihu Mountain and Huayang Cave, two national AAA scenic spots. By 2018, Hanshan County had 8 towns and 3 parks with a resident population of 395000, achieving a regional gross domestic product (GDP) of 17.358 billion yuan, of which the added value of the primary industry was 2.032 billion yuan, the secondary industry was 8.465 billion yuan, the tertiary industry was 6.86 billion yuan, and the proportion of the three industries was 11.749.