Shenzhen was responsible for 11 of them -- more than the entire United States, and almost twice as many as any other Chinese city (Chongqing and Guangzhou tied for second place, alongside Goyang in South Korea, with six skyscrapers each).

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References:
-http://edition.cnn.com/2017/07/23/architecture/shenzhen-skyscraper/index.html
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