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.
Zhongshan, known as "Xiangshan" in ancient times, is a prefecture-level city in Guangdong Province, one of the five prefecture-level cities in the country without zones, one of the central cities in the Pearl River Delta, an important node city in Guangdong-Hong Kong-Macau Greater Bay Area, and one of the regional central cities in Guangdong. It has maintained the fifth economic output of Guangdong Province for many years, and is known as the four tigers of Guangdong together with Shunde, Nanhai and Dongguan. Xiangshan County, formerly known as Xiangshan County, was established in 1152. In 1925, it was renamed Zhongshan County in memory of Sun Yat-sen. It is located at the lower reaches of the West and Beijiang River south-central of the Pearl River Delta, with Panyu District of Guangzhou City and Shunde District of Foshan City to the north, Jiangmen City, Xinhui District and Doumen District of Zhuhai City to the west, Zhuhai City to the southeast and Zhujiang Estuary to the east.