• Tucson
  • Nyima 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.

Nima County is a county under the jurisdiction of Naqu City, Tibet Autonomous region, located in the north of the Tibet Autonomous region and northwest of Naqu City, bordering Xigaze City in the south, Shuanghu County and Shenza County in the east, and Gaize County in the west. The average elevation is more than 5000 meters. It belongs to the semi-arid monsoon climate in the subcold zone of the plateau and the arid climate in the cold zone of the plateau. The air is thin, windy and snowy, with an average annual temperature of-4 ℃ and annual precipitation of 150mm. With a total area of 72499.41 square kilometers and a population of 31161 (at the end of 2014), it has jurisdiction over 1 town, 13 townships and 77 administrative villages. The county government is stationed in Nima town. Nima means "sun" in Tibetan. Nima County, whose economy is mainly animal husbandry, is a pure animal husbandry county. In 2014, the county's GDP was 482.86 million yuan.
Travel Notes In Nyima County
Across Qiangtang, Bangor and Nima ——2020 Autumn Tibet, Xinjiang and Qinghai Self-driving Travel Notes (9)
The Qiangtang Plateau is an important part of the Qinghai-Tibet Plateau, the largest inland area of ​​the Qinghai-Tibet Plateau (in the Qiangtang Basi