Book excerpt: Weibo, a hybrid of Twitter and Facebook, a popular microblogging service platform originated from China, has become one of the leading SNSs in Greater China Region. It features huge numbers of active users as well as verified high-profiled celebrity users and corporate users. Incorporating the insights from socio-psychology field to build an integrated framework of analysis for describing and explaining the processes and products of online identity construction by Chinese celebrities, the book represents an attempt to investigates how Chinese celebrities discursively construct their personal and social identities on Sina Weibo. The book can serve as a reference to the research on identity construction with its significant insights regarding the multi-faceted nature and relational dynamics of identity construction on social media and the uncovering of linguistic acts and features constituting relational identity. In addition, the insights from the study could be a reference to provide practical implications for personal branding and personal rapport management in the new Web 2.0 era.