The Inter-Regional Forum on Chinese Dialectal Grammar (IRF) was initiated by The Chinese University of Hong Kong and Sun Yat-sen University in 2015 and extended its partnership with Fudan University in 2017. It has become an academic event organised rotationally by these three institutions as a platform intended to foster research on dialectal grammar of southeastern Chinese dialects like the Yue and Wu dialects under a comparative approach, to promote inter-regional studies, and to strengthen intellectual exchange and dialogue among researchers from different regions.