Underground demons have always existed. But never did the Great Magic ever think of flattening the underground demons. There are some reasons for this. First, underground demons breed very fast, even if they are flat. In a short time, more demons will breed. Only when the people in the upper circle feel that the demons below are not very smooth, there are too many, they will come down and kill the last batch.

For the existence of the four monsters, they are happy to see their success. They can bind the rest of the demons! Moreover, the ground is extremely hidden, and there are many dangerous places. Even if the...