The 4th World Internet Conference formally opened in Wuzhen, Zhejiang, on Dec. 9th, 2017. The theme of this year’s conference is "Developing Digital Economy for Openness and Shared Benefits — Building a Community of Common Future in Cyberspace". At the Light of the Internet Exposition, China Telecom joins forces with QuantumCtek, CAS Quantum Network, and Zhejiang International Business Group Co., Ltd (ZIB), and debuts a mobile emergency satellite video conference system based on encryption provided by quantum safe service-mobile engines (QSS-ME).