```
What is this situation? I had never encountered such a condition before, and my master never explained it to me either. It looked like it was another kind of spell, which seemed to be able to make the heavenly fire burn for a longer time.
Perhaps it was because of this spell that the heavenly fire summoned by my master could continue burning without extinguishing.
However, sweat beads had already appeared on my master's face, suggesting that using such a spell was not an easy feat.
As for Yang Feng, I couldn't see his exact situation. He was still enveloped by the black mist, but I assumed it was not easy for him either.
In fact, this situation was to be expected. The sky full of Vengeful Spirits did not pose too much of a threat, but there were a great many of them. It seemed the only way to eliminate them was with heavenly fire or thunder. It was a contest of endurance against the controller of the Vengeful Spirits.