• Tucson
  • Dongpo 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.

Dongpo District, known as Meizhou in ancient times, also known as Qitong, is the municipal district of Meishan City, located in the middle of Meishan City. In 2013, the total population was 860000, covering an area of 1331 square kilometers, with jurisdiction over 3 streets and 13 towns. Dongpo District is the hometown of navel oranges, high-quality rice and kimchi in China. It is the hometown of famous writers Su Xun, Su Shi and Su Zhe. Dongpo District occupies three of the eight masters of the Tang and Song dynasties. Dongpo District is located at the southwest edge of Chengdu Plain, located in the middle reaches of Minjiang River, 67 kilometers north of Chengdu, 50 kilometers from Shuangliu International Airport and 60 kilometers south to Leshan and Emei Mountain. It is the political, economic and cultural center of Meishan City. In October 2018, it was selected as the "Top 100 areas with National Investment potential in 2018" and the Top 100 areas with New urbanization quality in 2018. October 2019
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