• Oklahoma City
  • Huinan County

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.

Huinan is located in the southeast of Jilin Province, the north of Tonghua City, the western foot of Changbai Mountain, the transitional zone between Changbai Mountains and Songliao Plain, and an important passage and gateway to Changbai Mountain. It covers an area of 2275 square kilometers and has a population of 360000. There are 19 ethnic groups (ethnic minorities are mainly Korean, Manchu, Hui, Mongolian, etc.), 11 townships and 1 provincial economic development zone, 143administrative villages, cultivated land area of 1.21 million mu. Grain output is stable at about 1.1 billion jin all the year round. Chaoyang Town, Huinan County is 187 km away from Changbaishan Airport, 200 km from Changchun Longjia Airport, 94 km from Tonghua Airport, Shen-Ji Railway, Fushang Expressway, National Highway G504 (former Changhui Line) and Huisan (former Ying Bai Line, Huinan to Baishan Sandaogou), Yongxin (former Huahui Line, Yongji to Xinbin)
Airport In Huinan County - Tonghua Sanyuanpu Airport
Tonghua Sanyuanpu Airport (Tonghua Sanyuanpu Airport, IATA: TNH, ICAO: ZYTN), located in Airport Road, Sanyuanpu Korean Town, Liuhe County, Tonghua City, Jilin Province, China, 41 kilometers southeast from the center of Tonghua, north from the county seat of Liuhe County 25.5 kilometers, a 4C-level military-civilian joint feeder airport (military and civil aviation fly in different fields)   .
On June 28, 2011, the construction of Tonghua Sanyuanpu Airport officially started; on December 4, 2013, the test flight of Tonghua Sanyuanpu Airport was successful; on June 18, 2014, Tonghua Sanyuanpu Airport officially opened for civil aviation business   .
According to the official website of the airport in April 2020, the terminal area of ​​Tonghua Sanyuanpu Airport is 3,034 square meters, and there are 4 seats on the civil aviation platform, including 3 class C seats and 1 class B seat; the runway is 2,300 meters long , 45 meters wide; can meet the annual passenger throughput of 194,000 person-times, cargo and mail throughput of 970 tons, and aircraft take-off and landing of 2,338 sorties.   .
In 2021, Tonghua Sanyuanpu Airport will handle a total of 127,603 passengers, a year-on-year increase of 29.2%, ranking 207th in the country; aircraft takeoffs and landings will reach 1,606, a year-on-year increase of 21.3%, ranking 221st in the country [twenty two]  .
From May 4, 2022, Tonghua Sanyuanpu Airport will be temporarily closed, and the specific resumption date will be adjusted in real time according to the construction progress [twenty one]  ; On July 1, the runway of Tonghua Airport has been closed for maintenance and reopened for use. [twenty four] 
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