• Tucson
  • Changyang Tujia Autonomous County

Tucson (/ˈtuːsɒn, tuːˈsɒn/; Spanish: Tucson, O'odham: Cuk-Ṣon) is a city in and the county seat of Pima County, Arizona, United States, and is home to the University of Arizona. It is the second largest city in Arizona behind Phoenix, with a population of 542,629 in the 2020 United States census, while the population of the entire Tucson metropolitan statistical area (MSA) is 1,043,433. The Tucson MSA forms part of the larger Tucson-Nogales combined statistical area (CSA). Both Tucson and Phoenix anchor the Arizona Sun Corridor. The city is 108 miles (174 km) southeast of Phoenix and 60 mi (97 km) north of the U.S.–Mexico border. Tucson is the 34th largest city and the 53rd largest metropolitan area in the United States (2014).

Major incorporated suburbs of Tucson include Oro Valley and Marana northwest of the city, Sahuarita south of the city, and South Tucson in an enclave south of downtown. Communities in the vicinity of Tucson (some within or overlapping the city limits) include Casas Adobes, Catalina Foothills, Flowing Wells, Midvale Park, Tanque Verde, Tortolita, and Vail. Towns outside the Tucson metro area include Benson to the southeast, Catalina and Oracle to the north, and Green Valley to the south.

Tucson was founded as a military fort by the Spanish when Hugo O'Conor authorized the construction of Presidio San Agustín del Tucsón in 1775. It was included in the state of Sonora after Mexico gained independence from the Spanish Empire in 1821. In 1853, the United States acquired a 29,670 square miles (76,840 km2) region of present-day southern Arizona and southwestern New Mexico from Mexico under the Gadsden Purchase. Tucson served as the capital of the Arizona Territory from 1867 to 1877. Tucson was Arizona's largest city by population during the territorial period and early statehood, until it was surpassed by Phoenix by 1920. Nevertheless, population growth remained strong during the late 20th century. In 2017, Tucson was the first American city to be designated a "City of Gastronomy" by UNESCO.

Changyang Tujia Autonomous County is an autonomous county under the jurisdiction of Yichang City, Hubei Province. Located in the mountainous area of southwestern Hubei, the middle and lower reaches of the Yangtze River and Qingjiang River, it is a special county that integrates the old, the young, the mountain, the poor and the storehouse. In July 1984, Changyang Tujia Autonomous County was established with the approval of the State Council of China. There are 23 ethnic groups, including Tujia, Han, Miao, Manchu, Mongolian, Dong and Zhuang, of which Tujia accounts for about 51%. The county government is stationed in Longzhouping Town. Changyang Tujia Autonomous County is located in the mountainous area of southwestern Hubei and the middle and lower reaches of the Yangtze River and Qingjiang River. it spans 110 °21'to 111 °21 'east longitude and 30 °12' to 30 °46 °north latitude; it is adjacent to Yidu to the east, Wufeng Tujia Autonomous County to the south, Badong County near the Yangtze River in Enshi Tujia and Miao Autonomous Prefecture to the west, and Zigui Heyi to the north.
Airport In Changyang Tujia Autonomous County - Yichang Three Gorges Airport
Yichang Sanxia Airport (Yichang Sanxia Airport, IATA: YIH, ICAO: ZHYC) is located at the junction of Yiting District, Yiling District and Zhijiang City, Yichang City, Hubei Province, China, 26 kilometers away from the city center and 55 kilometers away from the Three Gorges Dam   , is a 4D-level international tourist feeder airport, an important supporting project of the Three Gorges Project, and an international hub airport in the Three Gorges region   .
Yichang Three Gorges Airport was approved by the State Council and the Central Military Commission on January 18, 1993.   ;The construction officially started in September 1994, and passed the national completion inspection in October 1996. On December 28, 1996, it obtained the airport use permit and officially opened to air.   ; On June 23, 2022, the airport T2 terminal will be opened   .
According to the official website of the airport in February 2022, the terminal area of ​​Yichang Three Gorges Airport is 14,816 square meters, the area of ​​the air cargo terminal is 96 square meters, and the civil aviation station has 21 aircraft seats; the runway is 3,200 meters long and 45 meters wide   .  
In 2018, Yichang Three Gorges Airport handled a total of 2,948,700 passengers, 24,800 aircraft movements, and 16,900 tons of cargo and mail, a year-on-year increase of 31.41%, 27.17%, and 25.42% respectively.  
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