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Boston (US: /ˈbɔːstən/), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th-most populous city in the country. The city boundaries encompass an area of about 48.4 sq mi (125 km2) and a population of 675,647 as of 2020. It is the seat of Suffolk County (although the county government was disbanded on July 1, 1999). The city is the economic and cultural anchor of a substantially larger metropolitan area known as Greater Boston, a metropolitan statistical area (MSA) home to a census-estimated 4.8 million people in 2016 and ranking as the tenth-largest MSA in the country. A broader combined statistical area (CSA), generally corresponding to the commuting area and including Providence, Rhode Island, is home to approximately 8.2 million people, making it the sixth most populous in the United States.

Boston is one of the oldest municipalities in America, founded on the Shawmut Peninsula in 1630 by Puritan settlers from the English town of the same name. It was the scene of several key events of the American Revolution and the nation's founding, such as the Boston Massacre, the Boston Tea Party, the Battle of Bunker Hill, and the siege of Boston. Upon American independence from Great Britain, the city continued to be an important port and manufacturing hub as well as a center for education and culture. The city has expanded beyond the original peninsula through land reclamation and municipal annexation. Its rich history attracts many tourists, with Faneuil Hall alone drawing more than 20 million visitors per year. Boston's many firsts include the United States' first public park (Boston Common, 1634), first public or state school (Boston Latin School, 1635) first subway system (Tremont Street subway, 1897), and first large public library (Boston Public Library, 1848).

Today, Boston is a center of scientific research; the area's many colleges and universities, notably Harvard and MIT, make it a world leader in higher education, including law, medicine, engineering and business, and the city is considered to be a global pioneer in innovation and entrepreneurship, with nearly 5,000 startups. Boston's economic base also includes finance, professional and business services, biotechnology, information technology, and government activities. Boston is a hub for LGBT culture and LGBT activism in the United States. Households in the city claim the highest average rate of philanthropy in the United States. Boston businesses and institutions rank among the top in the country for environmental sustainability and new investment.

Beijing, abbreviated as "Beijing", is the capital of the people's Republic of China and one of the four municipalities directly under the Central Government in China. Beijing is a national central city, a mega city, a national political center, a cultural center, a center for international exchanges, a center for scientific and technological innovation, a world-famous ancient capital and a modern international city. It is also the office location of the Central Committee of Communist Party of China, the Central people's Government of the people's Republic of China and the standing Committee of the National people's Congress. Beijing is located in North China, with longitude 116o 20 'east and latitude 39 °56km north, adjoining Tianjin to the east and Hebei to the east. Beijing has a total area of 16410.54 square kilometers. As of September 2019, Beijing has jurisdiction over 16 municipal districts. The terrain of Beijing is high in the northwest and low in the southeast. Three sides of the west, north and northeast
Airport In Beijing - 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 Notes In Beijing
Beijing to Datong - Hanging Temple - Taiyuan - Pingyao Ancient City self-driving homework
first day It is best to drive to Datong one day in advance. The journey is about 346.7 kilometers and the time-consuming: 5 hours and 30 minutes. Choo
2021 Beijing Tongzhou Latest May Day 3 Days 2 Nights Parent-child Travel Guide Check-in Panoramic Attractions
In 2021, the much-anticipated Beijing Tongzhou Universal Studios will be completed and is expected to start trial operation in the near future. Tongzh
Beijing Yanqi Lake: the scenic spots are too beautiful to behold, and there are top1 parent-child hotels, you must go
The sun is just right, and the breeze is not dry. The upcoming Labor Day, while protecting yourself, remember to go out occasionally. I will continue
Imperial City
Journey to the Imperial Capital Five days free travel solo. 1 day: Old Summer Palace, Tsinghua University, Peking University, Zhongguancun. Address: N