C530 "Fierce Ghosts Deceiving the Souls, Intimidating Restraint"

Yin Bing, although all living beings have died and their souls have yet to disappear, they would flow through the underworld and become the battle soldiers of the Underworld.

In many ancient books, the matter of the ghost soldiers borrowing the dao was recorded. However, with the passage of time, the future generations had long forgotten all about it