• Tucson
  • Chengduo County

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.

Chengduo County, which belongs to Yushu Tibetan Autonomous Prefecture of Qinghai Province, is located in the central part of Qinghai Province. It borders Qumalai County in the north and west, Shiqu County in Sichuan Province in the southeast, and Tongtian River in the southwest and Yushu County. It is 160km wide from east to west and more than 209km from north to south, with an average elevation of 4500 meters. The total land area is 15300 square kilometers and the total population is 63000 (2013). There are Wenbao, Labu, Kana, Huema, Baimaima, Ani and other ethnic minorities. There are Gazang Temple, Sehang Temple, Labu Temple, Seba Temple and other tourist attractions in Chengduo County. In 2013, the GDP of many counties reached 1.27 billion yuan, an increase of 8.1% over the same period in 2012. On May 15, 2019, the people's Government of Qinghai Province approved the withdrawal of Chengduo counties from the poverty-stricken counties.
Travel Guides In Chengduo County
Travel Notes In Chengduo County
2021 Autumn Travel Notes on the Qinghai-Tibet Plateau (6) - Gaduojuewo
Gaduo Juewo Sacred Mountain is known as the Four Great Sacred Mountains of Tibetan Buddhism together with Gang Rinpoche in Tibet, Meili Snow Mountain
Travel Asks In Chengduo County
Travel Asks In Chengduo County