• Tucson
  • Kangxian 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.

Kang County, which belongs to Longnan City, Gansu Province, is located in the southeast of Gansu Province, southeast of Longnan City, and at the junction of Gansu, Sichuan and Shaanxi provinces. Kang County was known as Connecticut in ancient times, and was later incorporated into Wuzhou (Jizhou) after the Northern Zhou Dynasty, and Zhikang County in 1929. Kang County has jurisdiction over 18 towns and 3 townships, with a total area of 2958.46 square kilometers and a total population of 202000 (2015). In the Longnan Mountains on the south side of the West Qinling Mountains in Kangxian County, the elevation is between 560-2483 meters above sea level, which belongs to the transition from subtropical zone to warm temperate zone, with abundant rainfall, humid climate, sufficient light and forest coverage of 66.7%. It is known as "Longshang Jiangnan" and "Longshang Xishuangbanna". The natural resources of Kangxian County include water resources, biological resources, mineral resources and so on, with a total output value of 1.922 billion yuan in 2015. Kangxian County
Travel Guides In Kangxian County
Travel Notes In Kangxian County