People visit the 2019 China International Consumer Electronics Show (SINOCES) in Qingdao, east China's Shandong Province, July 19, 2019. The four-day China International Consumer Electronics Show kicked off here on Friday.Photo:Xinhua

Visitors learn about smart kitchen at the 2019 China International Consumer Electronics Show (SINOCES) in Qingdao, east China's Shandong Province, July 19, 2019. The four-day China International Consumer Electronics Show kicked off here on Friday.Photo:Xinhua

A girl experiences a virtual reality (VR) device at the 2019 China International Consumer Electronics Show (SINOCES) in Qingdao, east China's Shandong Province, July 19, 2019. The four-day China International Consumer Electronics Show kicked off here on Friday.Photo:Xinhua

An exhibitor manipulates a robot at the 2019 China International Consumer Electronics Show (SINOCES) in Qingdao, east China's Shandong Province, July 19, 2019. The four-day China International Consumer Electronics Show kicked off here on Friday.Photo:Xinhua

Visitors view a mini driverless shuttle bus at the 2019 China International Consumer Electronics Show (SINOCES) in Qingdao, east China's Shandong Province, July 19, 2019. The four-day China International Consumer Electronics Show kicked off here on Friday.Photo:Xinhua