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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.

Tongbai County, which is under the jurisdiction of Nanyang City, Henan Province, is located in the south of Henan Province, the eastern edge of Nanyang Basin, the hinterland of Tongbai Mountain and the junction of Henan and Hubei provinces. Tongbai County is known as "Wandong throat" and "Xinxi barrier". With a total area of 1915 square kilometers, it has jurisdiction over 11 towns and 5 townships, 215 administrative villages (communities), with a total population of 438000 in 2016. The history of Tongbai & one of the 72 blessed places in the quot; world & quot;, with many places of interest, profound history and culture, long history and ancient folk customs have formed Tongbai's unique culture. Huaiyuan culture, Buddhism and Taoism culture, Pangu culture and red culture have become the enrichment and extension of the Central Plains and even national culture. The territory takes & quot; 's four major cultures & quot; as the main line, with
Airport In Tongbai County - Nanyang Jiangying Airport
Nanyang Jiangying Airport (Nanyang Jiangying Airport, IATA: NNY, ICAO: ZHNY), located on Dingsheng Avenue, Baihe Street, Wancheng District, Nanyang City, Henan Province, China, 8 kilometers west of Nanyang City Center, is a 4D civil regional airport, China Southern Airlines training base   .
In April 1934, Nanyang Airport was completed and opened to navigation; on October 16, 1992, Nanyang Jiangying Airport was completed and opened to navigation, and Nanyang Airport was officially closed; in December 1998, the runway of Nanyang Jiangying Airport was extended to 2300 meters; in October 2010, Nanyang Jiangying Airport runway extended to 2800 meters   .
As of February 2020, the airport terminal of Nanyang Jiangying Airport covers an area of ​​8,400 square meters, with 2 boarding bridges; the civil aviation station covers an area of ​​70,000 square meters, with 10 seats; the runway is 2,800 meters long and 50 meters wide ; It can meet the needs of annual passenger throughput of 570,000 passengers, cargo and mail throughput of 2,700 tons, and aircraft take-off and landing of 144,000 sorties   .
In 2021, Nanyang Jiangying Airport will handle 1,067,753 passengers, a year-on-year increase of 11.7%, ranking 92nd in the country; cargo and mail throughput will be 861.1 tons, a year-on-year increase of 1.4%, ranking 126th in the country; aircraft take-offs and landings will reach 53,774 , a year-on-year increase of 15.3%, ranking 54th in the country   .
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