After the invaders were driven out, Mother Dragon and her Child Dragons did not return to Heaven but stayed on earth, right at the place where the battle occurred. The spot where the Mother Dragon landed was Ha Long, and where the Child Dragons came down was Bai Tu Long. The place where their tails violently wagged was called Long Vi, the present-day Tra Co Peninsula with its soft sandy beach stretching dozens of kilometers.
This myth is in line with the Vietnamese myth of their origin Con Rong Chau Tien. This myth describes the union between a king (representing the dragon) and his bride (representing a goddess) giving birth to 100 children which are the ancestors of the Vietnamese people. The Ha Long myth illustrate the Vietnamese belief of their origin and the fact that throughout their history, they are aided by their ancestors, the dragon and the gods, in the defense of their land. (APT)