18th China Adolescent Robotics Competition kicks off in Guiyang, SW China's Guizhou

Contestants prepare for a contest during the 18th China Adolescent Robotics Competition in Guiyang, capital of southwest China's Guizhou Province, July 21, 2018. The competition, which kicked off in Guizhou University on Saturday, attracts more than 3,000 contestants and coaches from both home and abroad. (Xinhua/Liu Xu)