Gu ding and Wei zonglin were hiding in the tree hole. There was a layer of gray light on their bodies, blocking them from the inside. If one looked at this light from the outside, they would not be able to see anything. Even if one stepped on this light, they would only feel that it was an ordinary tree trunk and not an energy shield.
This barrier was a barrier that Gu ding had created. It was a barrier with an illusory formation. Outsiders would not be able to see the tree hole. He would only see an ordinary, intact tree trunk. Even if he stepped on it, he would feel the same way.
Of course, this barrier was made by Gu ding, but he made it with an array. This array was also what Zhao Hai gave them when he entered the devil World.
