The boost in strength from the Courageous Sting's Heart was certainly not sustainable. Soon after the battle ended, Zhan Ye's strength returned to its original Sixth Rank First Stage. The Courageous Sting's Heart only provided Zhan Ye with a temporary state, similar to the effect of Blood Pupil Frenzy.
Zhan Ye was recalled back into the Soul Pet Space, and it would take about six days for Zhan Ye's Limb Regeneration Skill to be replenished with six uses again.
After using half of his soul power to feed the White Nightmare Demon, Chu Mu leaned against the tree and began to enter a meditative state.
It was now the deep autumn season, and sleeping outdoors without a tent would feel somewhat chilly. A Soul Pet Master's Soul Skill could maintain their body temperature, but few Soul Pet Masters would waste their soul power for this minor temperature issue, especially since preserving soul power in the wild is extremely important.