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.
Xuancheng, known as Wanling and Xuanzhou in ancient times, is a prefecture-level city in Anhui Province, located in the southeast of Anhui Province, bordered by Hangzhou and Huzhou in Zhejiang Province to the east, Huangshan in the south, Chizhou and Wuhu in the west and northwest, Maanshan in the province and Nanjing, Changzhou and Wuxi in Jiangsu Province to the north and northeast. It is located on the western waist line of the Shanghai-Nanjing-Hangzhou Triangle. It is a member city of Nanjing metropolitan area and the central city of G60 Kechuang Corridor. The city of Wanjiang takes the first wing of the demonstration area to undertake industrial transfer, which is the forward position for the central region to undertake the industrial and capital transfer in the eastern region, the central city of Anhui, Jiangsu and Zhejiang, and an important channel for the southeast coast to communicate with the interior. Xuancheng is located in the south of the Yangtze River, which has been said to be "the combination of the south and the north" since ancient times. Since the establishment of the county in the Western Han Dynasty, it has a history of more than 2000 years. Xuancheng has been since the Western Han Dynasty.