Apple CEO Tim Cook addresses the opening ceremony of the 4th World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

Delegates attend the opening ceremony of the 4th World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. The conference opened Sunday in Wuzhen. [Photo by Huang Zongzhi/Xinhua]

Jack Ma, chairman of Alibaba Group, addresses the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Huang Zongzhi/Xinhua]

Thai Deputy Prime Minister Prajin Juntong addresses the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

Enkhtuvshin Ulzisaikhan, deputy prime minister of Mongolia, addresses the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Huang Zongzhi/Xinhua]

Cisco CEO Chuck Robbins addresses the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

Liu Zhenmin, UN Under-Secretary-General for Economic and Social Affairs, addresses the opening ceremony of the 4th World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

Delegates attend the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

American computer scientist Robert Kahn addresses the opening ceremony of the Fourth World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]

Apple CEO Tim Cook addresses the opening ceremony of the 4th World Internet Conference in the water town of Wuzhen, East China's Zhejiang province, Dec 3, 2017. [Photo by Zheng Huansong/Xinhua]