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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.

Tongcheng, a county-level city under the jurisdiction of Anhui Province, is hosted by Anqing City. It is located in the southwest-central part of Anhui Province, with the Dabie Mountains in the west and the Yangtze River in the south, Lujiang County and Congyang County in the east, Shucheng County in the north, Qianshan City in the west, Huining County and Yixiu District in Anqing City in the south, with an administrative area of 1472 square kilometers. Tongcheng was called "Tongguo" in ancient times, which got its name because it is suitable for planting paulownia. In the second year of Tang Zhide (757), it was officially named "Tongcheng". In August 1996, Tongcheng withdrew its county and established a city. Tongcheng is high in the northwest and low in the southeast, with stepped distribution of mountains, hills and plains, overlapping mountains in the northwest, gentle slopes in the central hills, and vertical and horizontal paths in the southeast plain; it belongs to the subtropical humid monsoon climate with four distinct seasons and abundant rainfall. Tongcheng has a total population of 754000 (2018), including 12 towns and 3.
Airport In Tongcheng - Anqing Tianzhushan Airport
Anqing Tianzhushan Airport (IATA: AQG, ICAO: ZSAQ), located in Xiangshan Village, Yixiu District, Anqing City, Anhui Province, China, 6 kilometers south of Anqing city center, is a 4C-level domestic military-civilian joint regional airport   .
On December 22, 1993, Anqing Airport opened civil aviation business; on October 18, 2005, Anqing Airport was renamed "Anqing Tianzhushan Airport"; on February 1, 2015, the index level of the flight area of ​​Anqing Tianzhushan Airport was changed to 4C   ; On July 18, 2022, the T2 terminal of Anqing Tianzhushan Airport will be opened   .
As of July 2022, the terminal building of Anqing Tianzhushan Airport covers an area of ​​13,928 square meters, with 4 boarding bridges; 6 C-class seats on the civil aviation apron; the runway is 2,800 meters long and 50 meters wide; Annual passenger throughput of 1.3 million passengers, cargo and mail throughput of 5,500 tons, and aircraft take-off and landing of 13,402 sorties     [twenty one]  .
In 2021, Anqing Tianzhushan Airport will handle a total of 596,482 passengers, a year-on-year increase of 38.2%, ranking 121st in the country; cargo and mail throughput will be 2,899.4 tons, a year-on-year increase of 3.1%, ranking 87th in the country; sorties, a year-on-year increase of 35.6%, ranking 141st in the country   .
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