chapter 172 Rules of the ring

In the room, Russo Su sat cross-legged, with the huge Devouring Martial Soul floating quietly behind him.

At this time, Russo Su's brows furrowed tightly.

Because he had already devoured the 300 second-level seventh-level Beast Soul Soul Crystal that he had exchanged from the sect.

But Martial Soul showed no response and showed no signs of being promoted to the Earth level.

After a while, Russo Su couldn't help but sigh. The Beast Soul needed to advance to...