Forwarding and interactive writing are notable phenomena in social media space. Forwarding is a way to transmit information, express opinions and find consensus as well as a way to summon “we group” for Internet users. In recent years, with the forwarding and interactive writing become prevalent behaviors in social media space, discussing model has changed from “square model” to “chamber model” . The virtual community collapsed rapidly and soon be replaced by more realistic discussing community. The article argues that real time interacting “discussing community” embodies ideal communication action, and becomes a sort of reconstruction of public space.