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  • Haikou

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.

Haikou, also known as "Coconut City", the capital of Hainan Province, the strategic fulcrum city of the national "Belt and Road Initiative", the core city of China (Hainan) Free Trade Experimental Zone (Hong Kong), located between 19 °31 °N, 20 °04 °N and 110 °42'E, located in the north of Hainan Island, Wenchang to the east, Chengmai to the west, Pidingan to the south, Qiongzhou Strait to the north, Hainan Province is the political, economic, scientific and technological, cultural center and the largest transportation hub in Hainan Province. Haikou is located in the tropics, with a variety of tropical resources, and is a southern coastal city rich in natural and beautiful seaside scenery. Since the opening of the port in the Northern Song Dynasty, it has a history of thousands of years. Haikou was founded on December 9, 1926 and liberated on April 23, 1950. On April 13, 1988, Hainan established a special economic zone.
Airport In Haikou - Haikou Meilan International Airport
Haikou Meilan International Airport (IATA: HAK, ICAO: ZJHK), located 18 kilometers southeast of Haikou City, Hainan Province, China, is an international airport and a regional aviation hub       , the permit specifies that the flight zone indicator is 4E, and the airport design flight zone indicator is 4F   .
Haikou Meilan International Airport officially opened to traffic on May 25, 1999; in December 2011, it became the first airport in China to have an outlying island duty-free shop; in January 2016, the first phase of the terminal building reconstruction and expansion project was completed; in November 2015, it began Phase II expansion project;   In April 2019, the main body of the second phase terminal of Haikou Meilan International Airport was basically completed   ; On June 1, 2020, the second phase of the expansion project will conduct its first school flight;   On December 2, 2021, the second phase of the airport project was officially put into operation.  
According to the official website of the airport in January 2022, Haikou Meilan International Airport covers an area of ​​1,140 hectares, with a station area of ​​1.2502 million square meters. It has a runway with a length of 3,600 meters and a width of 45 meters and a runway of 3,600 meters in length and width The runway; the total size of the terminal building is nearly 450,000 square meters, with 139 parking spaces.  
As of December 2, 2021, Haikou Meilan International Airport has opened 235 routes, including 225 domestic routes, 9 international cargo routes, and 1 regional cargo route. There are 122 cities in total, including 111 domestic cities and international cargo routes. There are 10 cargo navigation cities and 1 regional cargo navigation cities.  
As of December 2, 2021, the passenger throughput of Haikou Meilan International Airport reached 16.2108 million person-times; the number of flight movements reached 126,500; The throughput ranks 16th in the country.  
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