

Perhaps partly, my personal belief is the is traces back to early tribal days. I believe the first cultural leaders likely struggled with retaining control and authority at a certain point. After all, there is only so much you can threaten people with to keep them in like. The worse of which is death. A sufficiently motivated person may not care about their physical well-being if they want to achieve a important enough goal. Create an invisible “soul” and a space wizard that determines if that soul gets bliss or torture after death and it adds a new level of control.
China is just capitalism with extra spicy corruption.