What's the catch?

As they were cleaning up, Wu Long told his ladies to go through the palace above, as he first cleaned up the bodies of the cultists outside, both taking away spatial rings and incinerating the bodies, then swept throughout the cave complex, and then finally went deep into the catacombs of the temple complex, the ones which entrances were in the grotto that the cultists called the "Inner Sanctum".

Though his main reason for sending them toward the palace was that he did not want them to see what was there, as it was not a pleasant scene.

Even though they have already seen some harsh realities, the cruelty of battle and the barbaric methods and rituals of the Corrupt Path were different things entirely.