"But how is this possible?!"
This place is several kilometers deep underground, and the rocks are extremely hard. No matter how cautious one might be, digging a tunnel would still cause a considerable commotion.
Even if Li Zhan were fighting in the distance, with his King Tier's extraordinary perception ability, it's impossible for him to be unaware. Moreover, most of his attention has always been on this side.
And soon, Li Zhan noticed something was wrong.
The underground passage didn't appear to be excavated, but seemed to have been dissolved by some strong acid!
This discovery left his mind blank.
A strong acid that can dissolve a passage in a short time?
This wouldn't be easy even for a King Tier [Pharmacist (B)]!
Even before he could think it through, a large number of bone spikes pierced through the rock from the underground around Li Zhan, shooting out fiercely!
