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Indianapolis (/ˌɪndiəˈnæpəlɪs/), colloquially known as Indy, is the state capital and most populous city of the U.S. state of Indiana and the seat of Marion County. According to the U.S. Census Bureau, the consolidated population of Indianapolis and Marion County was 977,203 in 2020. The "balance" population, which excludes semi-autonomous municipalities in Marion County, was 887,642. It is the 15th most populous city in the U.S., the third-most populous city in the Midwest, after Chicago and Columbus, Ohio, and the fourth-most populous state capital after Phoenix, Arizona, Austin, Texas, and Columbus. The Indianapolis metropolitan area is the 33rd most populous metropolitan statistical area in the U.S., with 2,111,040 residents. Its combined statistical area ranks 28th, with a population of 2,431,361. Indianapolis covers 368 square miles (950 km2), making it the 18th largest city by land area in the U.S.

Indigenous peoples inhabited the area dating to as early as 10,000 BC. In 1818, the Lenape relinquished their tribal lands in the Treaty of St. Mary's. In 1821, Indianapolis was founded as a planned city for the new seat of Indiana's state government. The city was platted by Alexander Ralston and Elias Pym Fordham on a 1-square-mile (2.6 km2) grid next to the White River. Completion of the National and Michigan roads and arrival of rail later solidified the city's position as a manufacturing and transportation hub. Two of the city's nicknames reflect its historical ties to transportation—the "Crossroads of America" and "Railroad City". Since the 1970 city-county consolidation, known as Unigov, local government administration operates under the direction of an elected 25-member city-county council headed by the mayor.

Indianapolis anchors the 29th largest economic region in the U.S., based primarily on the industries of trade, transportation, and utilities; professional and business services; education and health services; government; leisure and hospitality; and manufacturing. The city has notable niche markets in amateur sports and auto racing. The city is home to three Fortune 500 companies, two major league sports clubs (Colts and Pacers), five university campuses, and several museums, including the world's largest children's museum. However, the city is perhaps best known for annually hosting the world's largest single-day sporting event, the Indianapolis 500. Among the city's historic sites and districts, Indianapolis is home to the largest collection of monuments dedicated to veterans and war casualties in the U.S. outside of Washington, D.C.

Tangyuan County, one of the three counties in Jiamusi City, is resident in Tangyuan Town. It is located in the northeast of Heilongjiang Province, the western edge of Sanjiang Plain, the mountains of Xiaoxinganling in the north, Songhua River and Tangwang River in the south, between the coal city of Hequang, the forest city of Yichun and the port city of Jiamusi. Tangyuan County covers an area of 3420 square kilometers, with a forest coverage rate of 33%. The county has jurisdiction over 4 towns and 6 townships, with a total of 137 administrative villages. There are two state-owned farms, a reform-through-labour prison and a forestry bureau in the county. The total population of the county is 247631. Tangyuan County is a mid-temperate continental monsoon climate, with four distinct seasons, changeable weather, warm, hot and rainy summer, cold and dry winter, hot and rainy season, and wide range of temperature in winter and summer. There are Hajia, Jiahe and other railway lines and G201 Crane Highway in Tangyuan County.
Airport In Tangyuan - Jiamusi Dongjiao Airport
Jiamusi Dongjiao International Airport (Jiamusi Dongjiao International Airport, IATA: JMU, ICAO: ZYJM), located on Chang'an East Road, Dongfeng District, Jiamusi City, Heilongjiang Province, China, 10 kilometers away from Jiamusi City, is a 4C-level military-civilian joint international feeder airport   .
Jiamusi Dongjiao International Airport was founded in 1932. Its predecessor was Jiamusi Station of Civil Aviation of China established in 1958. On December 10, 2009, Jiamusi Dongjiao Airport's first-class air port was officially opened to the public, and the airport became an international airport.   .
According to the official website of the airport in February 2021, Jiamusi Dongjiao International Airport has a terminal area of ​​5,728 square meters, a runway 2,500 meters long, and a width of 45 meters; the civil aviation station has 6 seats, which can park 5 C-class aircraft, B 1 class aircraft; it can meet the needs of annual passenger throughput of 300,000 passengers     .
In 2021, Jiamusi Dongjiao International Airport will handle a total of 805,700 passengers, a year-on-year increase of 21.7%; cargo and mail throughput will be 1,294.4 tons, a year-on-year increase of 0.4%; aircraft movements will be 6,968, a year-on-year increase of 20.6%.  
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