As a wise and cunning man who was thorough with his plans, Yan Shenjun knew there must be other people hiding inside the cave. Hence, he left the strongest of his disciples, Immortal Jue Ming, in the area to finish off whoever was still inside the cave.
Needless to say, having considered every possibility, Yan Shenjun's arrangement was thorough. Immortal Jue Ming's sprinting spell was flawless, as Yan Shenjun had taught him well. Should the former come across even profound immortals, he would still be able to escape successfully.
However, what Yan Shenjun failed to foresee was Lin Jin refining his spirit devouring ghost worms and taking over as their new owner.
Based on Yan Shenjun's understanding, Lin Jin did not possess such capability. Only the unfettered immortal, Curator, did. Even then, Yan Shenjun believed that Curator would exterminate the ghost worms, rather than refine them.
Yan Shenjun was a hundred percent confident about that.