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  • Mengyin County

Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., and the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since 1854, the city has been coextensive with Philadelphia County, the most populous county in Pennsylvania and urban core of the Delaware Valley, the nation's seventh-largest and one of world's largest metropolitan regions with 6.245 million residents in 2020. The city's population at the 2020 census was 1,603,797, and over 56 million people live within 250 mi (400 km) of Philadelphia.

Philadelphia was founded in 1682 by William Penn, an English Quaker. The city served as capital of the Pennsylvania Colony during the British colonial era and went on to play a historic and vital role as the central meeting place for the nation's founding fathers whose plans and actions in Philadelphia ultimately inspired the American Revolution and the nation's independence. Philadelphia hosted the First Continental Congress in 1774 following the Boston Tea Party, preserved the Liberty Bell, and hosted the Second Continental Congress during which the founders signed the Declaration of Independence, which historian Joseph Ellis has described as "the most potent and consequential words in American history". Once the Revolutionary War commenced, both the Battle of Germantown and the Siege of Fort Mifflin were fought within Philadelphia's city limits. The U.S. Constitution was later ratified in Philadelphia at the Philadelphia Convention of 1787. Philadelphia remained the nation's largest city until 1790, when it was surpassed by New York City, and served as the nation's first capital from May 10, 1775, until December 12, 1776, and on four subsequent occasions during and following the American Revolution, including from 1790 to 1800 while the new national capital of Washington, D.C., was under construction.

With 18 four-year universities and colleges, Philadelphia is one of the nation's leading centers for higher education and academic research. As of 2021[update], the Philadelphia metropolitan area was the state's largest and nation's ninth-largest metropolitan economy with a gross metropolitan product (GMP) of US$479 billion. The city is home to five Fortune 500 corporate headquarters as of 2022. The Philadelphia skyline, which includes several globally renowned commercial skyscrapers, is expanding, primarily with new residential high-rise condominiums. Philadelphia and the Delaware Valley are a biotechnology and venture capital hub; and the Philadelphia Stock Exchange, owned by NASDAQ, is the nation's oldest stock exchange and a global leader in options trading. 30th Street Station, the city's primary rail station, is the third-busiest Amtrak hub in the nation, and the city's multimodal transport and logistics infrastructure, including Philadelphia International Airport, the PhilaPort seaport, freight rail infrastructure, roadway traffic capacity, and warehouse storage space, are all expanding.

Mengyin County is a county under the jurisdiction of Linyi City, Shandong Province. it is located in the central and southern part of Shandong Province, the hinterland of Taiyi Mountains and the shade of Mengshan Mountain. It spans 117,45,118 degrees east longitude and 36 degrees 02km north latitude, with a maximum distance of 65.4km from north to south and a maximum width of 45.8km from east to west, with a total area of 1601.6 square kilometers, accounting for 9.3 per cent of the total area of Linyi City. Mengyin County has a history of more than 2000 years since it was first set up in the Western Han Dynasty. As of 2012, Mengyin County has jurisdiction over 8 towns, 1 township and 1 street, with a total population of 551000, mainly Han nationality and 17 ethnic minorities (Hui, Miao, Dai, Manchu, Mongolian, etc.). As of 2012, the gross domestic product (GDP) of Mengyin County has reached 14.758 billion yuan, which is a national ecological demonstration.
Airport In Mengyin County - Linyi Qiyang Airport
Linyi Qiyang Airport (LINYI QIYANG AIRPORT; IATA: LYI, ICAO: ZSLY), located in Hedong District, Linyi City, Shandong Province, China, about 7.8 kilometers away from Linyi City, is a 4D-level civil airport and the first civil aviation in Shandong Province Airport   .
The airport was first built in 1934; it underwent two relocations in 1958 and 1998   ; On December 26, 1998, the flight resumed and was named Linyi Shubuling Airport   ;Renamed to Linyi Qiyang Airport on December 30, 2019   .
According to information on the airport's official website in June 2019, Linyi Qiyang Airport has two terminals, T1 (domestic in China) and T2 (international, Hong Kong, Macao and Taiwan) with a total area of ​​23,000 square meters; there is a runway with a length of 3,200 square meters. meters, with an apron of 160,000 square meters and 35 seats, which can guarantee an annual passenger throughput of 2.5 million passengers and a peak hour passenger throughput of 1,250 passengers     . A total of 37 domestic navigation cities in China have been opened   .
In 2020, due to the decline in passenger flow due to the impact of the global epidemic, the passenger throughput of Linyi Qiyang Airport was 1.8773 million, a year-on-year decrease of 27.3%; the cargo and mail throughput was 10,500 tons, a year-on-year increase of 2.4%; Increased by 37.0%; ranked 57th, 58th, and 71st in China respectively (ranked 61st, 58th, and 86th in China in 2019)   .
In 2021, the passenger throughput will reach 2,580,800 passengers, a year-on-year increase of 28.06%, and its ranking among 238 airports in the country will rise from 66th in 2018 to 61st in 2019, making it the largest and busiest airport in the southern part of Shandong Province . [twenty three] 
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