 Several thousand Yuan troops, unfamiliar with the terrain, were lost and never regained contact with the main force.An account of the battle from Le Tac, a Đại Việt scholar who defected to the Yuan in 1285, said that the remnants of the army followed him north in retreat and reached Yuan-controlled territory on Lunar New Year's Day in 1289.After three further months in Đại Việt, the Yuan army were withdrawn before malaria season.