
Contestants compete during the adolescent robot contest in Tianjin, north China, May 14, 2017. Over 3,000 students from some 130 schools participated in the robot contest on Sunday. (Xinhua/Liu Dongyue)

Contestants compete during the adolescent robot contest in Tianjin, north China, May 14, 2017. Over 3,000 students from some 130 schools participated in the robot contest on Sunday. (Xinhua/Liu Dongyue)