• Tucson
  • Ningqiang 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.

Ningqiang County is located in the southwest of Shaanxi Province, with Qinling Mountains in the north and Pillow Mountain in the south. The county has jurisdiction over 16 towns, 2 subdistrict offices and 200 administrative villages with a total population of 340000. Ningqiang is located in the confluence of the Qinling Mountains and the Bashan mountain system, with high in the southeast, low in the northwest and Wuding Mountain uplift in the middle. Ningqiang has abundant rainfall and humid air, and most areas have a warm temperate mountain humid monsoon climate with strong precipitation, with an annual precipitation of up to 1812.2 mm. Ningqiang County is a mountainous county with the confluence of the north and the south and the belt of Shu. It is the main gateway and golden passage from the northwest to the southwest. Baocheng, Yang'an Railway across the county, 108 National Highway, Western Han Expressway passing through; is the birthplace of the Han River, known as "the first city of the Han River" reputation, in November 2015 Ningqiang County was China
Travel Notes In Ningqiang County