Boy steers his paper plane at model airplane final in Sanya, South China’s Hainan province, August 3, 2014. The 16th “Fly to Beijing-Fly to the space” National Model Airplane Youth Finals kicked off in Sanya, Hainan, on August 3, 2014. Some 2,000 youngsters from 42 teams are competing for more than 150 awards in 20-plus events during the three-day event. [Photo/Xinhua]

A girl makes a paper plane at the model airplane final in Sanya, South China’s Hainan province, August 3, 2014. [Photo/Xinhua]