Low-level cultivators were different from high-level cultivators. The volcanoes in the hell sect were not dangerous to high-level cultivators. However, volcanic eruptions were always accompanied by poisonous gas, ash, magma, and volcanic rocks. In the Jia Ying sector, the volcanic eruptions also carried something else, which was Fire Crystal stones.
The Fire Crystal stone was a special crystal stone that contained the power of fire essence. The power of fire essence was a rare treasure for cultivators who practiced fire-type cultivation techniques. If those cultivators were allowed to absorb the power of fire essence, it would be very beneficial to their cultivation. The power of fire essence had another use, and that was that it was very beneficial for alchemy and weapon refinement.