Volcano, and an active one at that!
At the time, Zhou Tian led the lion all the way to this place for the sole purpose of harnessing the strength of the terrain to defeat his present opponent.
It had to be admitted that although the lion's power was not stronger than Zhou Tian's, the effect of its combined abilities, albeit having a certain gap in survivability compared to Zhou Tian, made it so that if Zhou Tian wanted to kill his opponent, it would still not be an easy task.
Therefore, for Zhou Tian at that time, there was no problem in ensuring his own safety, but if he intended to kill the lion, it would definitely not be a simple matter.
Consequently, if Zhou Tian wanted to defeat the lion, in addition to finding a way to attack its weakness, it would be best for him to also draw upon external forces.
And given the circumstances and the lion's fear of fire, Zhou Tian thought of a method to deal with it.