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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.

Puning, a county-level city under the jurisdiction of Guangdong Province, administered by Jieyang City, is located in the south by east of Guangdong Province, west of Chaoshan Plain, and in the upper reaches of Rongjiang, Lianjiang and Longjiang. The Tropic of Cancer runs through the northern part of the city, covering a total area of 1620 square kilometers, between longitude 115o 4310 "E and latitude 23o 0540" to 23o 31m 48 "north. As of 2018, Puning has jurisdiction over 7 streets, 17 towns, 1 township, and 8 township-level units, including 5 farms, 2 industrial parks and 1 general overseas Chinese area. The municipal government is stationed in the north street of Liusha. The total population is 2.4727 million. There are more than 1.95 million overseas Chinese and compatriots from Hong Kong, Macao and Taiwan. The iron hills and hills between the Rongjiang Plain and the Lianjiang Plain are stacked with verdant peaks, and there are many Cymbidium plants in Yazhang in ancient times.
Airport In Puning、Poeland - Jieyang Chaoshan International Airport
Jieyang Chaoshan International Airport (Jieyang Chaoshan International Airport, IATA: SWA, ICAO: ZGOW), is located in Denggang Town, Rongcheng District, Jieyang City, Guangdong Province, China, about 37 kilometers away from the center of Jieyang, and is located in Shantou, Chaozhou and Jieyang. The central location is a 4E-level international airport, an important trunk airport in the southern coastal areas of China, and the relocated airport of Shantou Waisha Airport. It is an important air node connecting the "21st Century Maritime Silk Road" and a backbone airport in the east wing of Guangdong Province.   .
Jieyang Chaoshan International Airport was officially opened on December 15, 2011 and named Jieyang Chaoshan Airport; on July 10, 2014, Jieyang Chaoshan Airport was officially renamed Jieyang Chaoshan International Airport.
As of December 2017, Jieyang Chaoshan International Airport has a terminal building of T1 (China's domestic and international Hong Kong, Macao and Taiwan) with a total area of ​​55,000 square meters, an apron of 160,000 square meters, and 21 aircraft seats, including 12 air bridge aircraft seats. , which can meet the annual passenger throughput of 4.5 million passengers. A total of 50 domestic and international regular routes have been opened, covering 46 cities.
In 2020, the passenger throughput of Jieyang Chaoshan International Airport is 5.286 million, a year-on-year decrease of 28.1%, ranking 44th in the country; the cargo and mail throughput is 28,000 tons, a year-on-year decrease of 0.5%, ranking 47th in the country; 45,000 takeoffs and landings, A year-on-year decrease of 20.4%, ranking 57th in the country.  
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