• Tucson
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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.

Zhaoyuan County is a county of Daqing City, formerly known as Hou Guo'erros, located in the southwest of Heilongjiang Province, the left bank of Songnen River, the center of the "Golden Triangle" of Changchun, Harbin and Daqing, belonging to Daqing City. It is the land of Jin Taizu's "Zhaoji Wang Ji". It has more than 6000 years of civilization, covers an area of 4198 square kilometers, and has a population of 475800 by 2013. Zhaoyuan County is a multi-ethnic county with 21 ethnic groups, 16 townships and 6 agricultural, forestry, animal husbandry and fishing farms. In 2019, it was listed as the second batch of national agricultural product quality and safety counties.
Airport In Zhaoyuan County - Daqing Saertu Airport
Daqing Sartu Airport (Daqing Sartu Airport, IATA: DQA, ICAO: ZYDQ), located at the junction of Sartu District, Daqing City, Heilongjiang Province, China and Anda City, Suihua City, 17.5 kilometers away from the eastern urban area of ​​Daqing City, and west of Daqing City The urban area is 22.5 kilometers away, and it is a 4C-level domestic feeder airport in China   .
In October 2008, the construction of Daqing Sartu Airport started; on September 1, 2009, Daqing Sartu Airport was officially opened to navigation; on June 15, 2019, the construction of the international terminal of Daqing Sartu Airport started   .
According to the official website of the airport in February 2021, the terminal building of Daqing Sartu Airport covers an area of ​​13,987 square meters, with 4 boarding bridges; the civil aviation station has 8 seats, including 1 class B seat and 6 C seats. Class aircraft stand, 1 dedicated deicing stand; the runway is 2,600 meters long and 45 meters wide; it can meet the needs of an annual passenger throughput of 1.47 million and a peak hour of 933 passengers   .
In 2019, Daqing Sartu completed a total of 858,021 passenger throughput, a year-on-year increase of 3.2%, ranking 117th in the country; cargo and mail throughput was 1,324.6 tons, a year-on-year decrease of 6.7%, ranking 111th in the country; aircraft movements took off and landed 6,697 , ranked 148th nationally   .
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