Âu Cơ was a young, beautiful fairy who lived high in the snow capped mountains. She traveled to help those who suffered from sicknesses since she was very skillful in medicine and had a sympathetic heart. One day, a monster suddenly appeared before her while she was on her traveling, it then frightened her, so she tried to escape by transforming into a crane to fly away. Lạc Long Quân, the dragon king from the sea, passed by and saw the beautiful lady in danger, so he grabbed a rock from nearby and killed the monster. When Âu Cơ stopped flying to see the very person that saved her, she turned back into a fairy and instantly fell in love with her benefactor. She soon bore an egg sac, from which hatched a hundred children. However, despite their love for each other, Âu Cơ had always desired to be in the mountains again and Lạc Long Quân, too, yearned for the sea where the length of days are measured by seasons. They separated, each taking 50 children. Âu Cơ settled in the Vietnamese snow covered mountains where she raised fifty young, intelligent, strong leaders, later known as the Hùng Vương, Hùng kings.