• Tucson
  • Laocheng qu

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.

The old city is located in the central east and north of Luoyang urban area. it is the earliest built area of Luoyang, one of the six main urban areas of Luoyang, and the economic, cultural and commercial center of the city. The old city has jurisdiction over 9 subdistrict offices, including 32 community neighborhood committees and 11 administrative villages, with a total area of 56.7 square kilometers and an urban area of 4.7 square kilometers; the total population is 185000 (the sixth census in 2010), and the urban population is 140000, accounting for 2.5% of the city's population. The topography in the region is high in the northwest and low in the southeast, with complex topography and diverse climate. Rich in human resources and tourism resources, the tertiary industry is relatively developed, and the industrial economy is relatively insufficient, which is a typical living consumption area and modern business area.
Airport In Laocheng qu - Luoyang Beijiao Airport
Luoyang Beijiao Airport (Luoyang Beijiao Airport, IATA: LYA, ICAO: ZHLY), located in Mangshan, at the junction of the old city and Mengjin District, Luoyang City, Henan Province, China, 11 kilometers southeast from the center of Luoyang, is a 4D-level international feeder airport , a national first-class air port open to the outside world, and the training airport of Luoyang Branch of Civil Aviation Flight Academy of China   .
On November 19, 1985, the construction of Luoyang Beijiao Airport started   ; On September 26, 1987, Luoyang Beijiao Airport officially opened to traffic   ; On August 1, 1992, Luoyang Beijiao Airport was approved by the State Council to open to the outside world   ; On April 9, 2010, the new terminal of Luoyang Beijiao Airport opened   .
According to the information on the airport's official website in June 2021, the terminal area of ​​Luoyang Beijiao Airport is 14,800 square meters, with 3 boarding bridges; the civil aviation station has 9 seats, including 8 D-class seats and 1 C-class seat. Class aircraft seats; the runway is 2,500 meters long and 45 meters wide; it can meet the needs of annual passenger throughput of 1.53 million passengers and cargo and mail throughput of 5,000 tons     .
In 2021, Luoyang Beijiao Airport will handle a total of 1,237,795 passengers, a year-on-year increase of 29.0%, ranking 87th in the country; cargo and mail throughput will be 928.9 tons, a year-on-year increase of 32.2%, ranking 124th in the country; aircraft movements will be 226,214 Flights, a year-on-year increase of 25.5%, ranking 11th in the country   .
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