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Las Vegas (US: /lɑːsˈveɪɡəs/; Spanish for "The Meadows"), often known simply as Vegas, is the 25th-most populous city in the United States, the most populous city in the state of Nevada, and the county seat of Clark County. The city anchors the Las Vegas Valley metropolitan area and is the largest city within the greater Mojave Desert. Las Vegas is an internationally renowned major resort city, known primarily for its gambling, shopping, fine dining, entertainment, and nightlife. The Las Vegas Valley as a whole serves as the leading financial, commercial, and cultural center for Nevada.

The city bills itself as The Entertainment Capital of the World, and is famous for its luxurious and extremely large casino-hotels together with their associated activities. It is a top three destination in the United States for business conventions and a global leader in the hospitality industry, claiming more AAA Five Diamond hotels than any other city in the world. Today, Las Vegas annually ranks as one of the world's most visited tourist destinations. The city's tolerance for numerous forms of adult entertainment earned it the title of "Sin City", and has made Las Vegas a popular setting for literature, films, television programs, and music videos.

Haidian District, which belongs to Beijing, is located in the west and northwest of Beijing, adjacent to Xicheng District and Chaoyang District in the east, Fengtai District in the south, Shijingshan District and Mentougou District in the west, and Changping District in the north. It covers an area of 431 square kilometers, with a boundary line of about 146.2 kilometers, 30 kilometers from north to south, and 29 kilometers from east to west, accounting for about 2.6 percent of the total area of Beijing. The area is between 39 °53 degrees north latitude and 40 degrees 09 degrees north latitude and 116 degrees 23 'east longitude. In the early Yuan Dynasty, the town of Haidian was near a shallow lake, so it was called "Haidian", that is, Haidian today. In September 1952, Haidian District was officially named, and the area under its jurisdiction was formed in January 1963. As of 2018, Haidian District has jurisdiction over 22 streets and 7 districts. As of
Airport In Haidian - Beijing Capital International Airport
Beijing Capital International Airport (Beijing Capital International Airport, IATA: PEK, ICAO: ZBAA), located in the northeast suburb of Beijing, China, 25 kilometers southwest of Beijing city center, 67 kilometers south of Beijing Daxing International Airport, is a 4F international airport   , is one of the three major portal complex hubs in China   , members of the international air cargo hub group in the Bohai Rim region   , the world's largest airport   .
Beijing Capital International Airport was built in 1958. On January 1, 1980, supporting projects such as the T1 terminal building, the apron, and the parking lot in front of the building were completed and officially put into use. On November 1, 1999, the T2 terminal was officially put into use, and at the same time, the T1 terminal was closed for renovation. On September 20, 2004, the T1 terminal was put into use again. In the spring of 2008, the airport expansion project (Terminal T3) was completed.  
As of July 2017, Beijing Capital International Airport has three terminal buildings with a total area of ​​1.41 million square meters; there are two 4F runways and one 4E runway   The length and width are 3800×60 meters, 3200×50 meters, 3800 meters×60 meters respectively; there are 314 seats in total; 252 domestic and foreign routes have been opened.    
From 1978 to 2018, the annual passenger throughput of Beijing Capital International Airport increased from 1.03 million to 101 million, ranking first in Asia and second in the world.   In 2019, the passenger throughput of Beijing Capital International Airport was 100.013 million passengers, a year-on-year decrease of 1.0%; the cargo and mail throughput was 1.9553 million tons, a year-on-year decrease of 5.7%; , No. 2, No. 1.  
In 2021, Capital Airport will add three new domestic destinations, namely Huai'an, Tumusuk and Jingzhou   .
Travel Sights In Haidian
Travel Notes In Haidian
Travel Asks In Haidian
Travel Asks In Haidian