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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.

Yuanyang County is one of the counties under the jurisdiction of Honghe Prefecture, Yunnan Province, the county is located in the south of Yunnan Province, across 74 kilometers from east to west, 55 kilometers from north to south, covering an area of 2189.88 square kilometers. The land in Yuanyang County is all mountainous, there is no Pingchuan, the lowest elevation is 144m, the highest elevation is 2939.6 m, the relative height difference is 2795.6 m, the annual average temperature is 24.4 ℃, the highest annual rainfall is 1189.1 mm, the lowest is 665.7 mm, and the average is 899.5 mm. Yuanyang County is one of the important producing areas of tropical fruits, Yunwu Tea and gold in Yunnan. As of 2017, Yuanyang County has jurisdiction over 3 towns, 11 townships, 134 village committees and 4 community neighborhood committees. At the end of 2010, Yuanyang County had a total population of 424284, including Hani, Yi, Han,
Travel Sights In Yuanyang xian
Travel Notes In Yuanyang xian
March: Yunnan Yuanyang Terraced Fields Jianshui Ancient City and Dali Cozy Self-driving Tour
This is the first time to publish a travelogue, and I always feel that it is a pity that I left nothing but albums and photos on my previous trips. Th
I'm waiting for you in Yunnan
I know you will come, so I will wait. Waiting for you to go to Kunming, the spring city, to spend the warm winter together, and take a picture of you
December 30, 2018-January 6, 2019 Shilin Jiuxiang & Yuanyang Terraced Fields & Jianshui Ancient City 8-day tour
foreword Busy and busy, I didn’t expect that it took more than a month to write this travel note~ The starting point for this trip is to see that the
Red sun, Xiaguang, sea of ​​clouds, terraced fields... come here if you want to see~
Yuanyang Hani Terraces are located in the south of Ailao Mountain in Yuanyang County, Yunnan Province, 38 kilometers southwest of Yuanyang County and
Travel Asks In Yuanyang xian
Travel Asks In Yuanyang xian