• Philadelphia
  • Zhengan 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.

Zheng'an County is the lower jurisdiction county of Zunyi City, Guizhou Province, which is located in the northeast of Zunyi City. It is the frontier of Chongqing and the important economic and cultural intersection area of southern Chongqing and northern Guizhou. It is known as the "gateway to northern Guizhou". Zheng'an County is located in the north of Guizhou Province, bordering Nanchuan District of Chongqing to the north, Daozhen County and Wuchuan County in the northeast, Fenggang County and Meitan County in the southeast, Suiyang County in the south and Tongzi County in the northwest. In 2017, Zheng'an County achieved a regional GDP of 10.06382 billion yuan, of which the added value of the primary industry was 2.86398 billion yuan, the secondary industry was 2.221 billion yuan, and the tertiary industry was 4.97884 billion yuan. The proportion of the three industrial structures in the gross domestic product is 28.4% in the primary industry, 22.1% in the secondary industry and 22.1% in the tertiary industry.
Travel Guides In Zhengan County
Travel Notes In Zhengan County
Township tour in central Guizhou·Pingsheng Village, Zheng'an County丨Spring is here, and this village is ready to celebrate "Ming"
Winter frost fades everything It's the beginning of spring again Let's leave all the trouble behind Walk into this quiet village at an altitude of
Countryside tour in central Guizhou·Zheng'an County Ruixiju │Watermill leisurely, singing the songs of the beautiful countryside
Surrounded by willow trees, blooming in full bloom A "beautiful village" with a blessed land and enjoying the mountains and rivers Like an ecologica
Township tour in central Guizhou·Zheng'an County Tongziju │ Enter the hometown of guitar and listen to nostalgic music
Patchwork beautiful village and farther Mountain peaks frame the rolling skyline A beautiful rural picture scroll just like that Tongziju, Yangxin