He originally imagined that the Zhang family needed him to do something very dangerous, but after hearing this, he realized that there was no need for him to fight. They mainly needed Tyrant Behemoth's strength.
At the entrance of the Fiend Tomb, there was a type of Fiend Stone that could keep growing. Wherever the Fiend Stone grew, the creatures in the Fiend Tomb could reach it. It was equivalent to a break out.
Dealing with Fiend Stones was very troublesome. One couldn't shatter them, much less place them anywhere. This was because even if Fiend Stones were shattered into powder, they would continue to grow as though they were alive.
Shattering Fiend Stones or taking them elsewhere would only make them occupy more places.
These Fiend Stones didn't pose much of a threat, but wherever it was, the creatures in the Fiend Tomb could pass through.
