A visitor (L) interacts with a robot at the Light of Internet Expo of the fifth World Internet Conference in Wuzhen Township of Tongxiang, East China's Zhejiang province, Nov 6, 2018. Opening here on Tuesday, the exposition focuses on the world's most recent internet development trends and cutting-edge technologies, showing the latest internet technologies, achievements, products and applications of more than 430 enterprises and institutions from home and abroad. [Photo by Xu Yu/Xinhua]

Visitors look at digitized cultural relics via a 3D display system at the Light of Internet Expo of the fifth World Internet Conference in Wuzhen Township of Tongxiang, East China's Zhejiang province, Nov 6, 2018. Opening here on Tuesday, the exposition focuses on the world's most recent internet development trends and cutting-edge technologies, showing the latest internet technologies, achievements, products and applications of more than 430 enterprises and institutions from home and abroad. [Photo by Xu Yu/Xinhua]

An auto-pilot vehicle is displayed at the Light of Internet Expo of the fifth World Internet Conference in Wuzhen Township of Tongxiang, east China's Zhejiang Province, Nov. 6, 2018. Opening here on Tuesday, the exposition focuses on the world's most recent internet development trends and cutting-edge technologies, showing the latest internet technologies, achievements, products and applications of more than 430 enterprises and institutions from home and abroad. [Photo by Xu Yu/Xinhua]

An exhibitor shows an internet-based digital identification system, known as CTID, at the Light of Internet Expo of the fifth World Internet Conference in Wuzhen Township of Tongxiang, East China's Zhejiang province, Nov 6, 2018. Opening here on Tuesday, the exposition focuses on the world's most recent internet development trends and cutting-edge technologies, showing the latest internet technologies, achievements, products and applications of more than 430 enterprises and institutions from home and abroad. [Photo by Xu Yu/Xinhua]