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  • Didao District

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.

Didao District is the municipal district of Jixi City, Heilongjiang Province. It is located in the northwest of Jixi City, connected with Chengzihe District in the east, Jiguan District, Hengshan District and Mashan District in the south, Linkou County in the northwest and Jidong County in the north. The government residence of Didao District is 15 kilometers away from Jiguan District in the city center. Didao District has jurisdiction over 2 townships (Lanling Township and Didaohe Township), 19 villages, 4 streets and 19 communities. In the fifth national census in 2000, Didao District had a total population of 121216. The total land area of Didao District is 517.66 square kilometers (206.64 square kilometers in Lanling Township and 311.02 square kilometers in Didaohe Township). In 2012, the per capita disposable income of urban residents was 14820 yuan, an increase of 14% over 2011, and the per capita net income of farmers was 11910 yuan.
Airport In Didao District - Jixi Xingkai Lake Airport
Jixi Xingkaihu Airport (Jixi Xingkaihu Airport, IATA: JXA, ICAO: ZYJX), located on National Highway 311, Chengjia Village, Hada Town, Jidong County, Jixi City, Heilongjiang Province, China, 16 kilometers west of Jixi city center and south of Jidong County 6 kilometers away, it is a 4C-level domestic feeder airport in China   .
On October 15, 2007, the construction of Jixi Xingkaihu Airport started; on October 9, 2009, the test flight of Jixi Xingkaihu Airport was successful; on October 16, 2009, Jixi Xingkaihu Airport officially opened to navigation   ; On October 14, 2021, the 2800-meter runway test flight of Jixi Xingkaihu Airport was successful [twenty two]  .
As of January 2022, the terminal building of Jixi Xingkai Lake Airport has an area of ​​17,676.75 square meters, with 3 boarding bridges and 10 C-class seats on the civil aviation apron; the runway is 2,800 meters long and 45 meters wide; Passenger throughput of 650,000 passengers and cargo and mail throughput of 1,500 tons   .
In 2021, Jixi Xingkai Lake Airport will handle a total of 252,422 passengers, a year-on-year increase of 15.9%, ranking 172nd in the country; cargo and mail throughput will be 226.1 tons, a year-on-year increase of 32.4%, ranking 168th in the country; Flights, a year-on-year increase of 16.4%, ranking 190th in the country   .
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