Oklahoma City (/oʊkləˌhoʊmə -/ (listen)), officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, and is the 8th largest city in the Southern United States. The population grew following the 2010 census and reached 687,725 in the 2020 census. The Oklahoma City metropolitan area had a population of 1,396,445, and the Oklahoma City–Shawnee Combined Statistical Area had a population of 1,469,124, making it Oklahoma's largest municipality and metropolitan area by population.
Oklahoma City's city limits extend somewhat into Canadian, Cleveland, and Pottawatomie counties, though much of those areas outside the core Oklahoma County area are suburban tracts or protected rural zones (watershed). The city is the eighth-largest in the United States by area including consolidated city-counties; it is the second-largest, after Houston, not including consolidated cities. The city is also the second largest by area among state capital cities in the United States, after Juneau, Alaska.
Jiangmen, also known as "Wuyi", Guangdong Province has jurisdiction over prefecture-level cities, is an important node city of Guangdong-Hong Kong-Macau Greater Bay Area, one of the central cities in the western part of the Pearl River Delta; located in the western Pearl River Delta, bordering the South China Sea, adjacent to Hong Kong and Macao; the geomorphological features are low in the north and high in the west, belonging to the subtropical monsoon climate; the total area is 9505 square kilometers, with jurisdiction over 3 municipal districts and 4 county-level cities; and the permanent population is 4.5617 million in 2018. With a long history and profound cultural heritage, Jiangmen is the hometown of Chen Baisha, the founder of psychology in the Ming Dynasty, Liang Qichao, the pioneer of modern reform, and Feng Ru, the father of China Aviation, and owns the Kaiping towers and villages of the world cultural heritage. a bird paradise that intoxicated Mr. Ba Jin. Jiangmen is an important transportation hub connecting Guangdong-Hong Kong-Macau Greater Bay Area with western Guangdong, bordering Zhongshan and Zhuhai in the east, Yangjiang in the west and Guangzhou in the north.