Lạc Long Quân is descended from the line of dragons and Âu Cơ who is descended from fairies is fascinated with Lạc Long Quân talent, which lead them to get married.
Lạc Long Quân visits his mom frequently and it made Âu Cơ upset about his absences. So Lạc Long Quân said since they descended from different things, it is difficult to live together, and they should split their children 50/50.
Despite the distance and separation, we must listen for one another and lend a hand to one another when needed. We must never let our bond be broken.
Lạc Long Quân divided the areas to govern. He showed one of the areas the skills of fishing and the art of tattoos and the other area about their agriculture, basically the tips of surviving.
Âu Cơ also divided the areas, depending where you live you either breed animals or grow fruit trees for food.
Even though Lạc Long Quân and Âu Cơ are separated they must lend each other a hand whenver they need help, this bond must not be broken.
When Bách-Việt race scattered throughout Southeast Asia, the children of Lạc Long Quân and Âu Cơ became vietnam ancestors. "Dragon and Fairy ancestorys."