According to the myth, Lạc Long Quân married Âu Cơ, a mountain fairy. She gives birth to a sac containing 100 eggs from which 100 children were born; this is the origin of the Vietnamese peoples. One day Lạc Long Quân told Âu Cơ: "I am descended from dragons, you from fairies. We are as incompatible as water is with fire. So we cannot continue in harmony." This said, the husband and wife parted. The man went to the seawards with 50 of their children, while his wife went to the mountainous region with the other half of the clan. The eldest son, who followed his mother, later installed himself as Quân's successor.