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A child guesses riddles during a temple fair held at eastern campus of Youth and Children's center of Fengtai district in Beijing, capital of China, Jan. 20. 2018. (Xinhua/Ren Zhenglai)
A child guesses riddles during a temple fair held at eastern campus of Youth and Children's center of Fengtai district in Beijing, capital of China, Jan. 20. 2018. (Xinhua/Ren Zhenglai)