A contestant takes part in the RoboMaster 2020 Youth Tournament in Macao, south China on Oct. 21, 2020. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday.Photo:Xinhua

Photo taken on Oct. 21, 2020 shows a robot controlled by a contestant during the RoboMaster 2020 Youth Tournament in Macao, south China. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday. Photo:Xinhua

Contestants take part in the RoboMaster 2020 Youth Tournament in Macao, south China on Oct. 21, 2020. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday. Photo:Xinhua

A contestant competes during the RoboMaster 2020 Youth Tournament in Macao, south China on Oct. 21, 2020. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday.Photo:Xinhua

A contestant competes during the RoboMaster 2020 Youth Tournament in Macao, south China on Oct. 21, 2020. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday.Photo:Xinhua

Photo taken on Oct. 21, 2020 shows a robot controlled by a contestant during the RoboMaster 2020 Youth Tournament in Macao, south China. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday. Photo:Xinhua

Contestants take part in the RoboMaster 2020 Youth Tournament in Macao, south China on Oct. 21, 2020. A total of 18 teams from 10 middle schools participated in the robotics competition here on Wednesday.Photo:Xinhua