Photo taken on July 21, 2018 shows robots at the 2018 China International Consumer Electronics Show in Qingdao, East China's Shandong province. The four-day electronics show kicked off on Friday. [Photo/Xinhua]

Visitors look at home appliances during the 2018 China International Consumer Electronics Show in Qingdao, East China's Shandong province, July 21, 2018. The four-day electronics show kicked off on Friday. [Photo/Xinhua]

People visit the 2018 China International Consumer Electronics Show in Qingdao, East China's Shandong province, July 21, 2018. The four-day electronics show kicked off on Friday. [Photo/Xinhua]