Students take part in the VEX robotics competition at Wuzhong District in Suzhou, east China's Jiangsu Province, Aug. 25, 2018. The two-day VEX robotics competition, with the participation of over 800 students, kicked off here Saturday. (Photo: Xinhua)

Student debug a robot during the VEX robotics competition at Wuzhong District in Suzhou, east China's Jiangsu Province, Aug. 25, 2018. The two-day VEX robotics competition, with the participation of over 800 students, kicked off here Saturday.  (Photo: Xinhua)

Students take part in the VEX robotics competition at Wuzhong District in Suzhou, east China's Jiangsu Province, Aug. 25, 2018. The two-day VEX robotics competition, with the participation of over 800 students, kicked off here Saturday.  (Photo: Xinhua)

Student debug a robot during the VEX robotics competition at Wuzhong District in Suzhou, east China's Jiangsu Province, Aug. 25, 2018. The two-day VEX robotics competition, with the participation of over 800 students, kicked off here Saturday.  (Photo: Xinhua)