A man watches football match with VR glasses at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen of Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. The expo, attracting 411 renowned internet enterprises from home and abroad, showcases the latest internet technologies and applications from around the world, highlighting artificial intelligence, cloud computing, big data and other areas. [Photo by Meng Dingbo/Xinhua]

People take photos at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

Staff members introduces 5G network technology at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People watch a flexible OLED at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen of Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People visit the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People enter the exhibition hall of the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People visit the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People visit the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen of Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

A man tries a pair of smart glasses at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People try out a voice-recognition translator at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People communicate with a doctor through a smart home terminal at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People visit the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]

People interact with a robot at the Light of Internet Exposition of the fourth World Internet Conference in Wuzhen, Tongxiang city of east China's Zhejiang Province, Dec 2, 2017. [Photo by Meng Dingbo/Xinhua]