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Ouyang Guoju (2nd L) stands by his self-made rotor aircraft near his home in Changsha city, central 皇冠体育app's Hunan province, Aug 3, 2009. Ouyang Guojun, a retired worker, made a rotor aircraft by spare parts for over a year. The rotor aircraft had a successful low altitude trial flight on July 26. [Xinhua] 
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