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.
Yongde County belongs to Lincang City, Yunnan Province, which controls the Nanting River in the east and strangles the Nujiang River in the west. It is surrounded by Gengma County, Zhenkang County, Longling County, Shidian County, Changning County, Fengqing County and Yun County. Yongde County was analyzed in 1963. The county has a Dedang town, so it is named Yongde. The area is 71.5km wide from east to west and 75.8km from north to south, with a total area of 3296 square kilometers, with mountainous areas accounting for 95 per cent. Yongde County has jurisdiction over 3 towns and 7 townships (including 2 ethnic townships), living in 22 ethnic groups, including Han, Yi, WA, Brown, Dai, Lisu and Lahu, with a total population of 369700 (2010). The climate of Yongde County generally belongs to the valley monsoon climate with the confluence of the south subtropics and the north tropics. The terrain is high in the southeast and west, tilting to the north, shaped like mulberry leaves. Although the surface of the county is inclined and relatively broken, it is suitable for tillage.