Robots perform dancing at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province, May 25, 2018. Intelligent manufacturing exhibition and forum were held during the convention on Friday. (Photos: Xinhua)

Photo taken on May 25, 2018 shows a self-driving car at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province. Intelligent manufacturing exhibition and forum were held during the convention on Friday.

A man plays a virtual reality game at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province, May 25, 2018. Intelligent manufacturing exhibition and forum were held during the convention on Friday.

A woman views flexible touch glass at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province, May 25, 2018. Intelligent manufacturing exhibition and forum were held during the convention on Friday.

A visitor experiences self-driving technology at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province, May 25, 2018. Intelligent manufacturing exhibition and forum were held during the convention on Friday.

An exhibitor (L) of iFlytek introduces a service robot to a visitor at the 2018 World Manufacturing Convention in Hefei, east China's Anhui Province, May 25, 2018. Intelligent manufacturing exhibition and forum were held during the convention on Friday.