This paper reports on a study that examined the process of two international doctoral students' academic socialisation in Chinese universities. Drawing on the concept of academic socialisation and social network analysis, we analysed multiple types of data, including study-abroad social network questionnaires, concentric circles interviews, reflective journals, and observational field notes over six months. The analysis of findings revealed that doctoral supervisors acted as the most influential agents in guiding the participants' academic socialisation. The participants also enacted agency to engage in a self-directed socialisation process during which they strategically appropriated resources to cope with various challenges. By unpacking the multi-layered relationships in the participants' networks, this study provides insights into the dynamic and intricate processes of international research students' academic socialisation. Implications are briefly addressed to support international students' experiences in postgraduate research programmes for successful academic socialisation.