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Washington, D.C., formally the District of Columbia, also known as Washington or D.C. or locally simply as the District, is the capital city and federal district of the United States. It is located on the east bank of the Potomac River, which forms its southwestern and southern border with the U.S. state of Virginia, and it shares a land border with the U.S. state of Maryland on its other sides. The city was named for George Washington, a Founding Father and the first president of the United States, and the federal district is named after Columbia, the female personification of the nation. As the seat of the U.S. federal government and several international organizations, the city is an important world political capital. It is one of the most visited cities in the U.S., with over 20 million annual visitors as of 2016.

The U.S. Constitution provides for a federal district under the exclusive jurisdiction of Congress; the district is not a part of any U.S. state (nor is it one itself). The signing of the Residence Act on July 16, 1790, approved the creation of the capital district located along the Potomac River near the country's East Coast. The City of Washington was founded in 1791, and Congress held its first session there in 1800. In 1801, the territory, formerly part of Maryland and Virginia (including the settlements of Georgetown and Alexandria), officially became recognized as the federal district. In 1846, Congress returned the land originally ceded by Virginia, including the city of Alexandria; in 1871, it created a single municipal government for the remaining portion of the district. There have been efforts to make the city into a state since the 1880s, a movement that has gained momentum in recent years, and a statehood bill passed the House of Representatives in 2021.

Changning District is located in the west of the central urban area of Shanghai, Jing'an District in the east, Minhang District in the west and southwest, Xuhui District in the southeast, and Wusong River (Suzhou Creek) in the north and Putuo District, with a total area of 38.3 square kilometers and a resident population of 693700 (2017). In 2017, Changning District achieved a GDP of 131.752 billion yuan. The traffic in Changning includes Xinhua Road, Li Road, Yan'an Road, Changning Road, Hongqiao Road and other major roads. Yan'an Road Viaduct, Inner Ring Line, Central Ring Line, Outer Ring Line and Shanghai Metro Line 2, 3, 4, 10 and 15 pass through the district. Shanghai Hongqiao International Airport is located in the west of the region. Changning has the most concentrated foreign-related high-standard residential, business and office comprehensive area in Shanghai, Gubei New District, Xinhua Road, Hongqiao Garden Villa District, traditional high-end residential area in old Shanghai.
Airport In Changning District - Shanghai Pudong International Airport
Shanghai Pudong International Airport (Shanghai Pudong International Airport, IATA code: PVG, ICAO code: ZSPD), located in Pudong New Area, Shanghai, China, about 30 kilometers away from the center of Shanghai, is a 4F civil airport and one of the three major portal complex hubs in China one   , members of the international air cargo hub group in the Yangtze River Delta region, and members of the East China Airport Group   , the largest hub airport and gateway airport in East China   .
Shanghai Pudong International Airport was completed in 1999. On September 16, 1999, the first phase of the project was completed and opened to navigation. On March 17, 2005, the second runway was officially opened. On March 26, 2008, the second terminal and the third runway were officially opened to navigation. Opening, the fourth runway was officially opened on March 28, 2015.
According to the information on the official website in September 2019, Pudong Airport has two terminals and a satellite hall, with a total area of ​​1.456 million square meters   , with 340 parking bays   ; There are four runways, 2 at 3800 meters, 1 at 3400 meters and 1 at 4000 meters.   As of the end of 2016, Pudong Airport has attracted 37 airlines to operate all-cargo aircraft business here, and the all-cargo aircrafts are available to 31 countries and 112 destinations, with nearly 1,000 all-cargo aircraft taking off and landing every week.  
In 2019, the annual passenger throughput of Pudong Airport was 76.1534 million passengers, the annual cargo and mail throughput was 3.6356 million tons, and the annual take-off and landing flights were 511,846. As of the end of 2017, 110 airlines have launched regular flights to the two major airports in Shanghai, and Pudong Airport is connected to 297 navigation points in 47 countries and regions around the world.  
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Travel Asks In Changning District