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  • Dong'an District

Portland (/ˈpɔːrtlənd/, PORT-lənd) is a port city in the Pacific Northwest and the largest city in the U.S. state of Oregon. Situated at the confluence of the Willamette and Columbia rivers, Portland is the county seat of Multnomah County, the most populous county in Oregon. As of 2020, Portland had a population of 652,503, making it the 26th-most populated city in the United States, the sixth-most populous on the West Coast, and the second-most populous in the Pacific Northwest, after Seattle. Approximately 2.5 million people live in the Portland metropolitan statistical area (MSA), making it the 25th most populous in the United States. About half of Oregon's population resides within the Portland metropolitan area.

Named after Portland, Maine, the Oregon settlement began to be populated in the 1840s, near the end of the Oregon Trail. Its water access provided convenient transportation of goods, and the timber industry was a major force in the city's early economy. At the turn of the 20th century, the city had a reputation as one of the most dangerous port cities in the world, a hub for organized crime and racketeering. After the city's economy experienced an industrial boom during World War II, its hard-edged reputation began to dissipate. Beginning in the 1960s, Portland became noted for its growing liberal and progressive political values, earning it a reputation as a bastion of counter-culture.

Dongan District is under the jurisdiction of Mudanjiang City, Heilongjiang Province, which is located in the southeast of Mudanjiang City. It was built in January 1958. It is adjacent to Aimin District by Binsui Railway in the north, and Xi'an District by Taiping Road in the west. The east and south are connected to Yangming District, Muling City and Ning'an City respectively. In 2006, the region's full-caliber added value, sales income, total output, profits and taxes, and profits reached 1.02 billion yuan, 3.49 billion yuan, 2.76 billion yuan, 270 million yuan and 160 million yuan respectively, up 0.9 percent, 1.7 percent, 0.8 percent, 1.4 percent and 1.1 percent respectively over 2005. The proportion of primary, secondary and tertiary production in the region was adjusted to 6:35:59. As of 2013, the administrative area is 294.2 square kilometers, and the total urban area is 5.2 square kilometers.
Airport In Dong'an District - Mudanjiang Hailang International Airport
Mudanjiang Hailang International Airport (Mudanjiang Hailang International Airport, IATA: MDG, ICAO: ZYMD), located in the southwest suburb of Mudanjiang City, Heilongjiang Province, China, 9 kilometers away from the center of Mudanjiang, is a 4C-level military-civilian joint international feeder airport and one of the country's opening-up class air port   .
On September 2, 1985, Mudanjiang Hailang Airport was officially open to navigation; in December 1998, Mudanjiang Hailang Airport was officially opened to the public with the approval of the State Council; on August 21, 2017, Mudanjiang Hailang Airport was officially renamed as Mudanjiang Hailang International Airport   .
As of February 2020, the terminal area of ​​Mudanjiang Hailang International Airport is 8,200 square meters, with 2 boarding gates; the area of ​​the civil aviation station is 38,000 square meters, with 4 seats; one is 2,600 meters long and 45 meters wide The asphalt runway can take off and land Boeing B737-800 and below; it can meet the needs of annual passenger throughput of 500,000 passengers   .
In 2019, Mudanjiang Hailang International Airport handled a total of 1,048,088 passengers, a year-on-year increase of 12.2%, ranking 103rd in the country; cargo and mail throughput was 1,290.0 tons, a year-on-year increase of 4.3%, ranking 112th in the country; aircraft took off and landed 8,128 sorties , a year-on-year increase of 8.9%, ranking 139th in the country   .
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