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.
Hekou Yao Autonomous County is located in the southeast of Honghe Hani and Yi Autonomous Prefecture, across the Red River from Vietnam's old market and Gulu City. It is the only autonomous county with Yao as the main body in Yunnan Province. The transportation in Hekou County is very convenient, and the Yunnan-Vietnam Railway, Kunhe Highway and Red River Channel form a hub here to connect with Vietnam, which is the most convenient land passage for Yunnan Province and even the southwest region to Southeast Asia and the South Pacific. Since opening to the outside world, Hekou County has made great efforts to develop port economy and trade and established good economic cooperation with Laojie Province in Vietnam.