A new form of communication, online communication, first emerged as computer-mediated communication (CMC). Later, as the Internet itself evolved and a range of new digital interactive media emerged, the scope of online communication expanded. From the Internet to the World Wide Web, from mainframes to personal computers, from smartphones to wearable devices, today’s online communication permeates a wide range of digital terminals, connecting people and information in a wide-ranging and intimate way through the social nervous system, the network. In addition to intrapersonal communication, all other traditional forms of communication—interpersonal, group, organizational, and mass communication—can be conducted via the Internet (Peng 2017a). Moreover, as the Internet has created a new type of media (which Hu Yong calls “shared media”) that combines interpersonal networks and information networks in the traditional sense, it has also led to the emergence of new forms of communication. In short, the Internet and new media, as a new Information Communication Technology (ICT), have revolutionized the way in which people interact with one another and reshaped new social environments, which thus initiated new areas for academic research. The study of online communication is one of these areas that emerged in response to this new technology and phenomenon.