At first, he didn't understand, but later, after An Jing learned about the situation of the Guiyi Army, he was very clear that the existence of this force was just like himself, a collective 'Seven Fiend Tribulation'—their resistance and warfare against the group was to force the group to better treat the people, and Heavenly Dao would also bestow destiny upon the Guiyi Army, which is the origin of the name 'Guiyi'.
But now, it's unknown whether the Guiyi Army has fallen or stopped working. In any case, at least recently, apart from the issue concerning the 'Heavenly Profound True Talisman', An Jing has not seen any major actions from the Guiyi Army.
Perhaps they are still secretly confronting the group in the Wilderness, but at least, the people of Tianyuan Realm have not benefited from their confrontation.
An Jing wishes to fish for law enforcement and make things bigger, not for himself to gain any significant benefits.
