The five [lost] children (no longer children) have puppets given by their respective fathers.
When these puppets receive bodies given by their director, they have desires.
Ya, the only one who understood this, destroyed three of them.
[Lost] brought seven of them to the human world.
"Try it and see the emotional world you want to experience!"
The eldest son Qing, the second son Hong, the eldest daughter Yu, the second daughter Ya, and the youngest daughter Dai all dispersed to start their lives in the world.