Apollo, who was inside the crater, received the last attack from the "heavenly tribulation" and was now in a state of meditation. His aura, which had previously weakened, was rising too high - a very powerful battle intention radiated from his body. Almost all cultivators who could be considered as most powerful in their world had a unique ability; Apollo's was <Regeneration>. It was because of this unique ability that he became a battle maniac since no matter how much he got hurt he always regenerated afterward. Basically, Apollo was a powerful tank.
For Waru and Athena's group, there was no better news than to know that Apollo managed to advance to the Monarch Spiritual Realm. Another thing that made them surprised was the tranquility with which Apollo managed to pass through the heavenly tribulation. Even more, the last attack looked very powerful, but in the end, it turned out to be even weaker than the previous one.