Fire Soul was a type of treasure containing the power of fire.

More precisely, the soul energy it contained was able to gather and store the power of fire. And cultivators at the Innateness stage or above, could absorb the soul energy and improve their soul sense with it, as well as making the fire power theirs.

Relatively speaking, it would not help the cultivators greatly improve their spiritual force.

That was why Zheng Han's eyes lit up when he ...