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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.

Longan County, which belongs to Nanning City, Guangxi Zhuang Autonomous region, is located in the southwest of Guangxi Zhuang Autonomous region and on both sides of the lower reaches of the Youjiang River. it is located at 107 °21 °E longitude 108 °6 °E, 22 °51 °N 23 °21 °N, Wuming County to the east and northeast, West Liantian County and Daxin County, which is connected to pingguo County in the northwest and bordered by Xixiangtang District of Nanning City and Jiangzhou District and Fusui County of Chongzuo City in the south. The maximum horizontal distance between east and west is 77 km and the maximum vertical distance between north and south is 56 km. With a total area of 2277 square kilometers, Longan County belongs to the humid monsoon climate of the south subtropics, hot and rainy, short in winter and long in summer. As of 2018, Longan County has jurisdiction over 6 towns and 4 townships, and the county people's government is stationed in Chengxiang Town. Longan County is an important transportation hub of railways, highways and waterways in Southwest China. As of 2018, Longan County
Airport In Long'an County - Nanning Wuxu International Airport
Nanning Wuxu International Airport (Nanning Wuxu International Airport, IATA: NNG; ICAO: ZGNN), located in Wuxu Town, Jiangnan District, Nanning City, Guangxi Zhuang Autonomous Region, China, 27.8 kilometers away from the city center   , is a 4E-level military-civilian international airport, the largest aviation hub in Guangxi Zhuang Autonomous Region, one of China's tens of millions of airports, an international gateway hub airport facing ASEAN, a first-class air port open to the outside world, and an alternate airport for international flights.  
Nanning Wuxu International Airport was officially completed and opened to navigation in November 1962   , was relocated from Nanning Airport in 1958; the first-phase expansion project was completed in 1990; the second-phase expansion project was completed on September 25, 2014   ; In 2019, the renovation and expansion of the T1 terminal area and the expansion of the runway in the T2 terminal area will begin     ; On March 19, 2020, it was approved to build the second runway and T3 terminal   .
As of January 2019, Nanning Wuxu International Airport has two terminal buildings, namely T1 (under renovation) and T2 (China's domestic and international Hong Kong, Macao and Taiwan), with a total area of ​​214,800 square meters   There is a runway with a length of 3,200 meters and 64 parking spaces (excluding T1); it can meet the annual passenger throughput of 16 million passengers, cargo and mail throughput of 164,000 tons, and aircraft take-off and landing of 137,600 sorties   . As of March 2019, a total of 121 domestic and international routes have been opened, covering 93 cities   .
In 2020, due to the impact of the global epidemic, the passenger throughput of Nanning Wuxu International Airport was 10.5841 million passengers, a year-on-year decrease of 32.9%; the cargo and mail throughput was 107,100 tons, a year-on-year decrease of 12.4%; Decreased by 23.1%; ranking 27th, 29th and 30th in China respectively   ;
On July 11, 2021, the "air-to-air transfer" business of international orders will be launched   ; On July 9, the National Civil Aviation Administration issued the "Letter on Feasibility Study Report of Nanning Airport Reconstruction and Expansion Project and Other Relevant Opinions". Nanning Airport will be rebuilt and expanded, and a new second runway will be built.  
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Travel Asks In Long'an County