Li Yan could sense the yin energy there. Yet within his Divine Sense, it was still an incomparably mixed mess, filled with chaotic miasma and deathly energy.
But the resonance between the inner and outer Five Elements that Li Yan had cultivated allowed him to sense that pitifully scant trace of yin energy leaking out.
At that moment, after carefully observing the tree hollow with his Divine Sense for a long while, he gradually found a few differences within it.
They were no more than faint threads of evidence.
Yin energy can break through the swamp. That means the yin energy beneath this place must be quite dense...
Li Yan rapidly considered the matter. But if they wanted to go down and investigate, the spells they would use would basically be immortal arts such as Earth Escape or Water-Repelling Arts.
Given these zombies' special sensitivity to their surroundings in the swamp, they would inevitably draw the attention of the nearby black zombies, or even the white zombie below.
To keep their group from exposing their tracks, the best course was to swiftly deal with these zombies first.
Only then could they investigate.
Li Yan felt that if he fully employed "Night Concealment Stealth," even ordinary Void Refinement cultivators might not be able to detect his trail.
But that was in normal terrain. Within this "Dark Domain Swamp," given Li Yan's habitual caution, he did not have that much confidence.
He could sense subtle changes in the laws of heaven and earth through the inner and outer Five Elements.
How familiar these zombies were with the "Dark Domain Swamp," and to what extent, was something Li Yan did not dare guarantee.
Very soon, Li Yan's voice transmission reached the captain's mind. He did not want to resolve this matter himself.
Moreover,