All the reincarnations of good and evil in the world are caused by cause and effect. "Only after Pangu created the world can all the vitality in the world exist. Only after Nuwa created humans and mended the sky can we survive today..." Of course, these are all derived from ancient myths and legends. They are not necessarily true, but they are indeed the simplest cause and effect.
There are good and evil causes and effects. Some people are born with extraordinary talents, and some people are born with disabilities and delusions. Some even have deformed external bodies, such as three hands and six fingers, and a sore on the face. The differences in their bodies are all due to the good and evil resentments accumulated in the previous life, and the accumulation of negative virtues of their ancestors. If the soul's resentment was too heavy when it was reincarnated in the previous life, Nai He's resentment has not disappeared, and the soul is incomplete; or the soul's obsession is too deep, so that part of the soul sticks to the same place. Meng Po did not notice it or accepted bribes, and let Nai He reincarnate in the world, and his illness and resentment will all show up in this life.
I am a seemingly healthy but unhealthy human being who was born safely due to the cause and effect. I am like a grocery collection box. In my body live many brothers and sisters who have competed with me and have no physical existence. They are good and evil, but they are not a complete whole with three souls and seven souls. Because their yin and yang are in conflict, they cannot be pieced together completely and can only be filled in my body randomly. Although they are incompatible and they often compete with each other in my body, I know very well that they have the same purpose, which is to "live, live completely..."
Purpose: Everyone's survival has meaning