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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.

Baoding, known in ancient times as Shanggu, Baozhou, Zaocheng and Baofu, is located in the middle of Hebei Province and at the eastern foot of the Taihang Mountains. It is one of the central cities in Beijing-Tianjin-Hebei region and a part of China (Hebei) Free Trade Experimental Zone. It is known as "three passes controlled in the north, nine provinces in the south, and an important place in Gifu." it's called Nanpinghan. Today, the name of Baoding means "defend the capital and stabilize the world". Baoding has always been the "capital capital" and the "south gate of the capital". In the Qing Dynasty, Baoding was the capital of Zhili Province and the resident of the governor of Zhili Province. for nearly 300 years from 1669 to 1968, Baoding was the political, economic, cultural and military center of Hebei and the regional political center of China. After the founding of New China, it has also been the provincial capital of Hebei Province twice. Baoding is also the legendary hometown of Emperor Yao, with a history of more than 3000 years. It is the kingdom of Yan and Zhongshan in history.
Travel Guides In Baoding
Travel Notes In Baoding
Baoding Yesanpo One House and Two Villas B&B, a three-storey building with a single door and a single courtyard, looks like a painting from a distance and a poem from a close view
Terrace, starry sky, and the extremely romantic Yesanpo internet celebrity homestay "One House, Two Villas". It’s hot in July, it’s already hot enough
Hi, your autumn romance has been contracted by Huazhong Town
In the writings of Chinese literati, autumn is sad, perhaps because the bleak scenery of "autumn is desolate, with hundreds of flowers" is too easy to
Strolling and Eating in Yandu Ancient City
Yi County, when Mao Mao said this, many people didn't know where it was, but when he said that Yishuihe was windy and cold, Jing Ke who assassinated t
Sketches of Yesanpo
Yesanpo It is adjacent to Mentougou District and Fangshan District of Beijing, 110 kilometers to the border with Beijing, 90 kilometers to the center