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, born in Co Phap in what is now Bac Ninh province, served as royal adviser across two separate dynasties, the Early Le and then the Ly under Ly Cong Uan, a documented continuity of court service distinct from a single term of counsel offered to one ruler alone. That his advisory role survived the collapse of one dynasty and continued into the founding of the next is documented as evidence his standing rested on his own reputation rather than on loyalty to any single royal house.
His role at the founding of the Ly court is remembered as inaugurating an era of close cooperation between the Vietnamese state and the Buddhist monkhood, a documented institutional pattern distinct from an isolated instance of one monk's influence with one king. In that era, monks served regularly as royal advisers, a documented practice that outlived Van Hanh's own death in 1018 rather than ending with it.
That a monk's advisory service crossed the fall of one dynasty and the founding of the next, and is remembered as opening a lasting era of monk court cooperation rather than a single episode of personal influence, marks Van Hanh's legacy as a documented case where one adviser's standing outlasted the specific rulers he served.