• Tucson
  • Gejiu

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.

Gejiu City is a municipality under the jurisdiction of Honghe Hani and Yi Autonomous Prefecture, Yunnan Province, China, which is located between 102 °54'E and 103 °25'E and 23 °01'N 23 °36'. "Gejiu" is evolved from the transliteration of "fruit work" in the Yi language, which means a place to grow buckwheat and eat buckwheat. Gejiu is 280 kilometers away from the provincial capital Kunming and 200 kilometers from Vietnam. The city has a land area of 1587 square kilometers, with a total population of 453300, of which the urban population is 309500, the level of urbanization is 68.30%, the urban built-up area is 12 square kilometers, and the urban resident population is 180000. There are more than 120000 ethnic minorities living in Yi, Zhuang, Hui, Miao, Dai and Hani. Gejiu is a kind of metallurgy which mainly produces tin and produces lead, zinc, copper and other non-ferrous metals.
Travel Notes In Gejiu
The display of tin industry, inch-gauge railway, and small trains, and the scenery by the Gejiujin Lake in Yunnan Province are distinctive
Jinhu Lake, also known as Gejiu Lake, is the city center and golden treasure land of Gejiu City, Yunnan Province. When you arrive in Gejiu, you must v