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Chicago (/ʃɪˈkɑːɡoʊ/ (listen) shih-KAH-goh, locally also /ʃɪˈkɔːɡoʊ/ shih-KAW-goh) is the most populous city in the U.S. state of Illinois and the third-most populous in the United States, after New York City and Los Angeles. With a population of 2,746,388 in the 2020 census, it is also the most populous city in the Midwest. As the seat of Cook County (the second-most populous U.S. county), the city is the center of the Chicago metropolitan area, one of the largest in the world.

On the shore of Lake Michigan, Chicago was incorporated as a city in 1837 near a portage between the Great Lakes and the Mississippi River watershed. It grew rapidly in the mid-19th century; by 1860, Chicago was the youngest U.S. city to exceed a population of 100,000. The Great Chicago Fire in 1871 destroyed several square miles and left more than 100,000 homeless, but Chicago's population continued to grow to 503,000 by 1880 and then doubled to more than a million within the decade. The construction boom accelerated population growth throughout the following decades, and by 1900, less than 30 years after the fire, Chicago was the fifth-largest city in the world. Chicago made noted contributions to urban planning and zoning standards, including new construction styles (such as, Chicago School architecture, the development of the City Beautiful Movement, and the steel-framed skyscraper).

Chicago is an international hub for finance, culture, commerce, industry, education, technology, telecommunications, and transportation. It is the site of the creation of the first standardized futures contracts, issued by the Chicago Board of Trade, which today is part of the largest and most diverse derivatives market in the world, generating 20% of all volume in commodities and financial futures alone. O'Hare International Airport is routinely ranked among the world's top six busiest airports according to tracked data by the Airports Council International. The region also has the largest number of federal highways and is the nation's railroad hub. The Chicago area has one of the highest gross domestic products (GDP) in the world, generating $689 billion in 2018. The economy of Chicago is diverse, with no single industry employing more than 14% of the workforce. It is home to several Fortune 500 companies, including Archer Daniels Midland, Conagra Brands, Exelon, JLL, Kraft Heinz, McDonald's, Mondelez International, Motorola Solutions, Sears, and United Airlines Holdings.

Kaiyuan City, located in the southeast of Yunnan Province, belongs to Honghe Hani and Yi Autonomous Prefecture. Yanshan in the east, Qiu Bei in the south, Mengzi and Gejiu in the south, Jianshui in the west and Maitreya in the north are the traffic fortresses and central cities in southeastern Yunnan. The total area is 1946.91 square kilometers and the population is 334100 (2016). Kaiyuan is rich in coal resources. Xiaolongtan, 20 kilometers away from the city, has lignite reserves of 1.2 billion tons, which is the largest open-pit coal mine in Yunnan, with an annual mining capacity of 6.3 million tons. There is a 600000 kilowatt Kengkou power plant. Cement, chemical fertilizer, sugar, papermaking, wine, food and other industries are beginning to take shape. In 2011, Kaiyuan realized 4.03 billion yuan in industrial added value and 1.19 billion yuan in profits and taxes. In March 2015, Kaiyuan was officially named by the National Association of Love and Health.
Travel Guides In Kaiyuan County
Travel Sights In Kaiyuan County
Travel Notes In Kaiyuan County
In May, when the phoenix flowers bloom, walking in Lujiang Park in Kaiyuan, Yunnan is a cool and relaxing experience.
Considering the sharp increase in the number of people traveling during the "May 1st" holiday in 2021 and the crowding of popular urban scenic spots,
Travel Asks In Kaiyuan County