Students of China Civil Aviation University, who will serve as ceremony guides for the upcoming 13th Chinese National Games, take part in a training in Tianjin, August 15, 2017.(Photo/Xinhua)
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Students of China Civil Aviation University, who will serve as ceremony guides for the upcoming 13th Chinese National Games, take part in a training in Tianjin, August 15, 2017.(Photo/Xinhua)
