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.
Dongxing, a county-level city under the jurisdiction of Guangxi Zhuang Autonomous region, is located in the southwestern border of China and southern Guangxi, bordering the Beibu Gulf in the southeast and Vietnam in the southwest. In 1996, Dongxing became a county-level city. In 2012, the city has jurisdiction over 3 towns, 31 administrative villages and 10 communities, with a land border of 39 km, a coastline of 50 km, an area of 590 square kilometers and a resident population of 157100 (2016). Dongxing has Beilun Estuary Mangrove Reserve, one of the three major mangrove demonstration reserves in the world, and national 4A scenic spots such as Beijing Island Scenic spot and Pingfeng Rainforest Park. there are historical and cultural landscapes such as the No. 1 boundary monument of Daqing, the people's Friendship Park between China and Vietnam, and the former residence of Chen Jitang, the "Southern Heavenly King" of the Republic of China. At the second China Tourism Forum in 2008, Dongxing City was awarded "China"