Children experience interactive game at Haikou Aviation Museum in Haikou, capital of south China's Hainan Province, Sept. 16, 2017. The museum opened for free on Saturday, the National Science Popularization Day. (Xinhua/Guo Cheng)
Children experience interactive game at Haikou Aviation Museum in Haikou, capital of south China's Hainan Province, Sept. 16, 2017. The museum opened for free on Saturday, the National Science Popularization Day. (Xinhua/Guo Cheng)
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