A Huge Hole in One Punch

"Oh? Dean wants to resolve the problem of the Eighteen Grottoes of Dragonhead once and for all?"

Lin Feng was a little surprised. He did not know much about the Four Forbidden Places, but he knew that they had always existed, and the Nine Sages of humanity could not do anything about them.

"Sage Lin Feng, out of the Four Forbidden Places, the Eighteen Grottoes of Dragonhead is actually the weakest. There are at least two demon emperors in the Eighteen Grottoes of Dragonhead that we know of. I usually keep these two demon emperors occupied. They are indeed very strong when they join forces, but they prefer to stay in the Eighteen Grottoes of Dragonhead. When they occasionally leave the grottoes, I would always impede them."