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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.

Changyi City is a county-level city under the jurisdiction of Weifang City. it is located in the northwest of Shandong Peninsula, downstream of Weihe River, on the bank of Laizhou Bay, between 36 °25 degrees north latitude, 37 °08 degrees north latitude and 119 °13 degrees east longitude. Pingdu County is bounded by Jiaolai River in the east, Gaomi County and Anqiu County in the south, Fangzi District and Hanting District in Weifang City in the west, and Laizhou Bay in the north, with a total urban area of 1578.7 square kilometers. As of 2016, Changyi has jurisdiction over 3 streets and 6 towns. In 2015, Changyi had a total population of 585000. In 2016, the city's GDP reached 40 billion yuan, and the per capita disposable income in urban and rural areas reached 31000 yuan and 16000 yuan, respectively. Changyi belongs to the economic circle around the Bohai Sea, which is the coastal external area determined by the State Council.
Airport In ChangYi - Weifang Airport
Weifang Nanyuan Airport (Weifang Nanyuan Airport, IATA: WEF, ICAO: ZSWF), located at No. 1 Airport Road (Nanyuan Street), Kuiwen District, Weifang City, Shandong Province, China, 8 kilometers north of Weifang City Center, is a 4D-level military and civilian shared feeder airport   .
On April 4, 1996, Weifang Nanyuan Airport officially opened civil aviation business; on April 19, 2004, HNA Group Weifang Nanyuan Airport Co., Ltd. was unveiled; on August 3, 2015, Weifang Nanyuan Airport's air port temporarily open   .
As of April 2020, the terminal area of ​​Weifang Nanyuan Airport is 19,182 square meters, with 1 boarding bridge; the civil aviation station area is 34,000 square meters, with 6 civil aviation seats, including 2 class D seats, 4 C-class seats; the runway is 2,600 meters long and 48 meters wide; it can meet the needs of an annual passenger throughput of 320,000 passengers     .
In 2021, Weifang Nanyuan Airport will handle a total of 680,077 passengers, a year-on-year increase of 39.7%, ranking 113th in the country; cargo and mail throughput will be 31,820.1 tons, a year-on-year decrease of 1.5%, ranking 46th in the country; aircraft take-offs and landings will be 8,710 , a year-on-year increase of 21.2%, ranking 133rd in the country   .
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