A drone flies over the 'Best of China' area at the Spielwarenmesse, a leading international fair for toys, hobbies and leisure, in Nurnberg, Germany, on Feb. 4, 2017. (Xinhua/Luo Huanhuan)
A drone flies over the 'Best of China' area at the Spielwarenmesse, a leading international fair for toys, hobbies and leisure, in Nurnberg, Germany, on Feb. 4, 2017. (Xinhua/Luo Huanhuan)