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Miami (/maɪˈæmi/ my-AM-ee), officially the City of Miami, known as "the 305", "The Magic City", and "Gateway to the Americas", is a major city, a coastal metropolis and the county seat of Miami-Dade County in South Florida, United States. With a population of 442,241 at the 2020 census, it is the second-most populous city in Florida and the eleventh-most populous city in the Southeastern United States. The Miami metropolitan area is the ninth largest in the U.S. with a population of 6.138 million in 2020. The city has the third-largest skyline in the U.S. with over 300 high-rises, 58 of which exceed 491 ft (150 m).

Miami is a major center and leader in finance, commerce, culture, arts, and international trade. Miami's metropolitan area is by far the largest urban economy in Florida and the 12th largest in the U.S., with a GDP of $344.9 billion as of 2017. According to a 2018 UBS study of 77 world cities, Miami is the second richest city in the U.S. and third richest globally in purchasing power. Miami is a majority-minority city with a Hispanic population of 310,472, or 70.2 percent of the city's population, as of 2020.

Downtown Miami has one of the largest concentrations of international banks in the U.S. and is home to many large national and international companies. The Health District is home to several major University of Miami-affiliated hospital and health facilities, including Jackson Memorial Hospital, the nation's largest hospital with 1,547 beds, and the Leonard M. Miller School of Medicine, the University of Miami's academic medical center and teaching hospital, and others engaged in health-related care and research. PortMiami, the city's seaport, is the busiest cruise port in the world in both passenger traffic and cruise lines. Miami is the second largest tourism hub for international visitors, after New York City. Miami has sometimes been called the Gateway to Latin America because of the magnitude of its commercial and cultural ties to the region.

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