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Visitors view the simulation demonstration during an event marking China's Space Day at the Harbin Institute of Technology in Harbin, capital of northeast China's Heilongjiang Province, April 24, 2018.(Xinhua/Wang Jianwei)
Event held to mark China's Space Day in Harbin, NE China
Source: Xinhua| 2018-04-24 21:54:45|Editor: Xiang Bo
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