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A competitor demonstrates her robot during the competition at Xingtai City, north China's Hebei Province, March 2, 2019. Over 400 students took part in an adolescent robotics competition held in Xingtai. (Xinhua/Tian Xiaoli)
A competitor demonstrates her robot during the competition at Xingtai City, north China's Hebei Province, March 2, 2019. Over 400 students took part in an adolescent robotics competition held in Xingtai. (Xinhua/Tian Xiaoli)