Participants pose for a photo in a youth robot competition organized by the Hong Kong Polytechnic university in south China's Hong Kong, Aug. 28, 2017. Young players from cities as north China's Beijing, Hong Kong and Xinbei of southeast China's Taiwan competed in the event. (Xinhua/Wang Xi)
A participant operates in a youth robot competition organized by the Hong Kong Polytechnic university in south China's Hong Kong, Aug. 28, 2017. Young players from cities as north China's Beijing, Hong Kong and Xinbei of southeast China's Taiwan competed in the event. (Xinhua/Wang Xi)
Robots are displayed in a youth robot competition organized by the Hong Kong Polytechnic university in south China's Hong Kong, Aug. 28, 2017. Young players from cities as north China's Beijing, Hong Kong and Xinbei of southeast China's Taiwan competed in the event. (Xinhua/Wang Xi)
A participant operates in a youth robot competition organized by the Hong Kong Polytechnic university in south China's Hong Kong, Aug. 28, 2017. Young players from cities as north China's Beijing, Hong Kong and Xinbei of southeast China's Taiwan competed in the event. (Xinhua/Wang Xi)
Robots are displayed in a youth robot competition organized by the Hong Kong Polytechnic university in south China's Hong Kong, Aug. 28, 2017. Young players from cities as north China's Beijing, Hong Kong and Xinbei of southeast China's Taiwan competed in the event. (Xinhua/Wang Xi)