Tongfangzhiwang Digital Publishing Group, referred to as Tongfangzhiwang for short, China Academic Journal (CD-ROM) Electronic Magazine Co., Ltd. sponsored by Tsinghua University and its four wholly-owned subsidiaries, KNOW CHINA, Tongfangzhiwang (Beijing) Technology Co., Ltd., Tongfang Digital Publishing Technology Co., Ltd., Shanxi Province Tongfangzhiwang Digital Publishing Technology Co., Ltd. is mainly engaged in digital publishing and digital value-added development of domestic and foreign knowledge and cultural resources.