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.
Feicheng, a county-level city under the jurisdiction of Shandong Province, is hosted by Taian City, located in the middle of Shandong Province and at the western foot of Mount Tai, bordering Daiyue District of Taian City in the east and Dongping County of Taian City and Pingyin County of Jinan City in the west. Ningyang County of Taian City and Wenshang County of Jining City are across the river in the south, and Changqing District of Jinan City is bounded by mountains in the north; the total area is 1277 square kilometers. In the Western Zhou Dynasty, the Fei people scattered here, which was called Feizi Kingdom in ancient times, hence the name of Feicheng. Feicheng County, which was set up in the early Western Han Dynasty, has a history of more than 2200 years. It is the hometown of Zuo Qiuming, the "sage of history" and the place where Fan Li, the "saint of merchants", lives in seclusion. He is known as "the city of a gentleman". There are various types of landforms in Feicheng City. The terrain tilts from northeast to southwest. The highest point is 600 meters above sea level and the lowest is 57.7 meters above sea level. Feicheng is a warm continental monsoon climate zone with four distinct seasons.