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Visitors try the VR helicopter simulation system during the Aviation Expo China 2017 in Beijing, capital of China, Sept. 19, 2017. The expo is held from Sept. 19 to 22.(Xinhua/Zhang Chenlin)
Visitors try the VR helicopter simulation system during the Aviation Expo China 2017 in Beijing, capital of China, Sept. 19, 2017. The expo is held from Sept. 19 to 22.(Xinhua/Zhang Chenlin)