"In reality, a person has only one soul and seven spirits within, adding up to exactly 'eight'."
"On top of the Life Soul, the seven spirits are parasitic..."
Mo Hua glanced again at the forbidden box.
On the pattern of the forbidden box, eight prisons are depicted; the largest is in the center while the other seven are distributed around it, centered on the middle.
This aligns with the principle of "seven spirits parasitic on the Life Soul."
The seven outer prisons each have a lock, with chains connecting them, converging upon the gate of the central prison.
The prisoners in the seven prisons suffer different penalties, but upon closer inspection, it's discovered they are all parts of the penalty suffered by the prisoner in the central large prison...
Mo Hua's train of thought suddenly became clear.