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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.

Shizuishan City, a prefecture-level city under the jurisdiction of Ningxia Hui Autonomous region, is located in the northernmost part of Ningxia, facing the Ordos platform to the east and the northern Yinchuan Plain to the west, with a typical temperate continental climate; it has jurisdiction over two districts and one county, with a total area of 5310 square kilometers; and the permanent population in 2017 is 803000. Shizuishan City gets its name because of the protruding mountains and rocks on both sides of the Yellow River. Shizuishan has a superior geographical location, which is located between the 100 billion ton coalfields of Ningdong and Mengxi countries. It is an important node city of Hubao Yinlan Economic Zone, Ningxia Yellow River Economic Zone and Ningmeng-Shaanxi-Wujin Economic Triangle Economic Zone. The Yellow River runs through the east and Helan Mountain in the west. The wetland area reaches 415 square kilometers. Shahu, the first batch of 5A tourist scenic spots in the country, is integrated. Shizuishan City, known as "stuffed Coal City", is famous for producing anthracite.
Travel Guides In Shizuishan
Travel Notes In Shizuishan
Sand and water are natural here, walking into another kind of Jiangnan—Ningxia Sand Lake
If I hadn't come to Sand Lake, I wouldn't have known that sand and water, which shouldn't coexist, are so natural here. The Love of Lakes and Dunes
Helan Ancient Temple, Xixia Famous Blue—North Wudang Temple
China is so big, I want to visit it. Take you to a place you have been or have not been to. Helan Ancient Temple, Xixia Famous Blue—North Wudang Templ
Sand skiing, ice skating and skiing, crossing Xixia, Helan Mountain, Tengger, Ningxia and Inner Mongolia's "three slips" and "three crossings" New Year's Eve trip
How to live in winter, of course, go to the north of the north. A few days ago, the pattering rain in the south of the Yangtze River made my whole bod
Guigang Daxiyuan Chairman Li Zhenhong won the 13th Chinese Golden Melody Award
Recently, Chairman Li Zhenhong of Guigang Daxiyuan Food Co., Ltd. won the 13th Chinese Golden Melody Award, with excellent lyrics, "Waiting for You to