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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.

Tongshan District, known as Pengcheng County in ancient times, belongs to Xuzhou City, Jiangsu Province. It is named after Tongshan Island in Weishan Lake. It is adjacent to Weishan County and Zaozhuang City in Shandong Province in the north, Hanqiao District and Lingbi County in Suzhou City in the south and southwest, Pizhou City and Suining County in the east, and Xiao County, Feng County and Pei County in the west. Tongshan District is located in the center of Huaihai Economic Zone. In ancient times, it was known as the "thoroughfare of the five provinces". Today, it is convenient for the "five links" of highways, railways, waterways, aviation and pipelines. Xuzhou High-tech Zone in Tongshan District is the first state-level high-tech zone in northern Jiangsu.
Airport In Tongshan District - Xuzhou Guanyin International Airport
Xuzhou Guanyin International Airport (Xuzhou Guanyin International Airport, IATA: XUZ, ICAO: ZSXZ), located in Shuanggou Town, Suining County, Xuzhou City, Jiangsu Province, 45 kilometers away from Xuzhou City, is a 4E-level civil international airport   , is the central airport of Xuzhou Metropolitan Circle and Huaihai Economic Zone.  
Xuzhou Guanyin International Airport was officially opened to navigation on November 8, 1997; it was named Xuzhou Guanyin Airport   ;Renamed to Xuzhou Guanyin International Airport on January 6, 2016   ; On June 8, 2018, the second phase of the expansion project was completed.  
As of January 2019, Xuzhou Guanyin International Airport has two terminals, T1 (international and Hong Kong, Macao and Taiwan) and T2 (China domestic), with a total area of ​​58,000 square meters; there is a runway with a length of 3,400 meters; the apron is 6.3 10,000 square meters, 9 seats   ; As of October 2019, a total of about 39 domestic and international routes have been opened in China   , 39 navigable cities.  
In 2019, the passenger throughput of Xuzhou Guanyin International Airport was 3,005,875 passengers, a year-on-year increase of 19.3%; the cargo and mail throughput was 12,068 tons, a year-on-year increase of 19.9%; the number of take-offs and landings was 49,648, a year-on-year increase of -%; ranking 55th in China respectively , 52nd, and 60th.  
Travel Guides In Tongshan District
Travel Sights In Tongshan District
Travel Notes In Tongshan District
Travel Asks In Tongshan District
Travel Asks In Tongshan District