Chapter 664: Chapter 353: Annihilating the Remnant Soul, The Far Side of the Divine Bridge

"Indeed, they are all cunning and deceitful, one cannot be careless, or he would have escaped."

Xu Yan nodded; these remnant souls being able to survive until now naturally wasn't simple.

Fortunately, he had been cautious enough to completely annihilate the other party.

In the Heavenly Cave Ruins, the existence of such remnant souls meant that someone must have encountered them before, and perhaps had been misled by them.

Xu Yan searched the surroundings for a while longer to make sure nothing was missed, then continued his exploration.

The Heavenly Cave Ruins were not considered large, but they were not small either.

A meticulous exploration would take several days to complete.

"Huh?"

Suddenly, he discovered a skull buried under loose soil, which was even more bizarre; it was blood-red as if it had been soaked in fresh blood.

With a wave of his hand, the skull floated up.

"Finally, I've been waiting for you!"