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Competitors adjust robots 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)
Competitors adjust robots 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)