In the pitch-black cave, Su Mo moved forward cautiously.
He walked slowly, for the cave was utterly dark and filled with incomparably dense devilish qi. Even with his cultivation, his line of sight extended less than two hundred meters.
The devilish qi was as viscous as thick fog, not only blocking his vision but also hindering his perception.
Deep within the devilish mist, Su Mo felt extremely oppressed, as though a storm were about to break and immense danger could descend upon him at any moment.
Bang!
A dull thud rang out. Su Mo kicked something slightly soft beneath his feet, causing him to stagger. Looking down, his gaze immediately sharpened.
For a cold corpse lay upon the ground, utterly devoid of life.
"It's him!" Su Mo was slightly startled. The corpse on the ground belonged to one of the Black Flame Tribe members who had entered before him.
Earlier, three Black Flame Tribe members had entered ahead of him, and this person was one of them.
Su Mo was baffled. After examining the body briefly, he found no wounds on it whatsoever.
"How did this person die?" Su Mo was puzzled. What danger lurked within this cave that it could kill someone without a sound?
Then, Su Mo carefully inspected the Black Flame Tribe member's corpse and immediately discovered the issue.
"Empty!"
Su Mo's eyes widened, for he discovered that the Black Flame Tribe member's skull was completely hollow.
Only an empty shell remained of the man's head. The brain, flesh, blood, and everything else within had all vanished.
This made Su Mo's scalp prickle. What was going on? Where had this person's brain gone?
Whoosh!
Just as Su Mo was filled with suspicion, a sudden change erupted.
A streak of black light suddenly flew out of the Black