The Man in the Black Mist had previously educated the group about three types of resentful spirits in the lower world.
Among them, the weakest type was the translucent resentful spirit they had encountered before.
The second type was a congregation of resentful spirits, where the translucent resentful spirits sometimes gathered, with one acting as the leader.
If such a resentful spirit could devour humans in the outside world, it would eventually become an existence similar to the Man in the Black Mist.
The last type was a powerful resentful spirit that devoured other resentful spirits, ultimately becoming a Resentful Deity.
Ordinary translucent resentful spirits, with strength roughly at the Mid Foundation Establishment, could be handled by either Huang Gu or Vice Sect Master Zhuang Peng if they were prepared.
Resentful congregations mostly possessed the strength of the Late Foundation Establishment Stage, which Ning Fan and the Man in the Black Mist could easily resolve.