This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Van Hanh was a Vietnamese Buddhist monk of the Vinitaruci Zen lineage, active in the late tenth and early eleventh centuries, a documented monastic identity distinct from a court official who held no religious standing of his own. He served first as adviser to the Early Le dynasty and then to Ly Cong Uan, a documented continuity of service distinct from an adviser attached to a single ruler alone.
Following the collapse of the Early Le dynasty, Vietnamese tradition credits Van Hanh with reading omens and offering counsel that helped bring about Ly Cong Uan's peaceful accession to the throne in 1009, a documented transition distinct from a violent seizure of power settled by force. That accession founded the Ly dynasty, which would go on to rule Dai Viet for more than two centuries, a documented span distinct from a short lived regime that collapsed soon after its own founding.
That a Buddhist monk's own counsel is credited with helping a dynasty change hands peacefully in 1009, founding a Ly dynasty that then governed for more than two hundred years afterward, marks Van Hanh's role at that transition as a documented case where a single adviser's guidance is remembered as shaping a kingdom's course for generations beyond his own lifetime.