I, Tang Sanzang the Demon Buddha, Run a Black Factory in Hell

No System, mystery, cosmic horror.

His soul transmigrates into Tang Sanzang, and he takes up his post in the Underworld from the start.

I'll set up an illegal mine and make every demon king and demon lord work for me!

An evil god is invading? Got a permit? Paid your taxes?

You have no permit and haven't paid your taxes, and you still dare to invade?

Blood River Fiend Lord: "I've dominated the Three Realms for eight thousand years. How could I dig mines for you, bald monk!"

Tang Sanzang: "If you can't understand Buddhist teachings, this humble monk knows a little martial arts, too."

Blood River Fiend Lord: "Merciful Buddha, these hands of mine are best at digging tunnels!"