Screenshots of mobile learning community (MLC). (a) General interface of MLC. Based on their own incentives and personalized needs, teachers could autonomously join the MLC entitled “Chinese Education Youth Scholar Group” by scanning QR code using their Tencent QQ smartphone APP; and (b) Interactions of MLC. When joining the MLC, teachers can engage in informal learning activities, e.g., inquiry for an academic question, response to other members’ inquiries, sharing their ideas or informative (textual or multimodal) resources, etc. As displayed in Figure (b) Interactions of MLC, a member was asking an academic question, and another member was replying to his question