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.
Lengshuijiang City is a county-level city under the jurisdiction of Hunan Province, hosted by Loudi City. It is located in the middle of Hunan Province, with Lianyuan City in the east, Xinhua County in the west and Xinshao County in the south. It has 1 township, 5 towns and 4 streets under its jurisdiction, with a total area of 439 square kilometers. In 2016, Lengshuijiang had a total population of 372400 at the end of the year. Lengshuijiang City is high in the north and south and low in the middle, with an asymmetric saddle shape, a subtropical monsoon climate and convenient transportation. Hunan-Guizhou Railway and Louhuai Expressway run through the whole territory from east to west, and the water resources are navigable all the year round. Scenic spots include Boyue Cave, Mahayana Mountain and so on. Lengshuijiang is a typical resource-based industrial city. The tin mine in Lengshuijiang is known as "antimony capital of the world" because it is rich in antimony ore. Lengshuijiang is one of the cities supported by the national strategy of the rise of central China compared with the policy of the large-scale development of the western region.