People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)

People visit The Light of Internet Expo in Wuzhen Town, east China's Zhejiang Province, Dec. 17, 2015. The Light of Internet Expo opened here on Tuesday, which is part of the 2015 World Internet Conference. (Xinhua/Xu Yu)