C608 Yan Ke Nine Peaks Competition!(1)

Inside the cave dwelling.

As soon as Su Yu stepped into the cave, he immediately sensed the stark contrast between a middle-grade and a low-grade cave dwelling.

To put it into perspective, if the energy concentration in a low-grade cave was one, then in a middle-grade cave, it would be a whopping three!

The sheer density of energy far exceeded that of the low-grade caves