[True Wall of Sighs]: The surface is an earth wall. When the enemy breaks it, you can immersively feel the "dung soil" sprayed out from inside.

[This is called a bomb]: Throw it with an explosion effect, but it is actually a spell card that makes the enemy explode.

When Gu Yan traveled to this world, he found that the human race was too weak, so he decided to do something...

So many years later, the entire demon army stood naked in front of the hundred-meter-high [earth wall], furious and helpless:

"What kind of imbecile came up with this?!!"