Bia Ut is the Cham memory of Ngọc Khoa, a princess of the Nguyễn lords given in marriage to King Po Rome around 1631 to seal a political alliance. Where Vietnamese sources record only the dynastic match, Cham legend turns her into the agent of the kingdom's undoing: as queen she feigned a mortal sickness and told her husband she could be cured only if the sacred kraik tree — the tree in which Po Rome's own life and the realm's fortune were bound — were cut down. The king obeyed; the tree bled and died, his power drained away, and he was soon captured by the Vietnamese to perish in captivity. She endures in Cham tradition as the beautiful stranger-queen whose betrayal marks the beginning of the end of independent Champa.