Master Owen heaved a sigh of relief: "It seems that the Spirit Fire in this fissure can enhance their spiritual nature. These Artifact Demons rely on their spiritual nature to survive, and their spiritual nature is consumed daily, so they must regularly strengthen themselves with the Spirit Fire from the fissure. That's why they've developed such a powerful instinct."
Master Owen became more interested in this Spirit Fire and flew to the closest Spirit Fire fissure. This one was about 1200 yards long, winding and stretching on the ground, with many "branches." It looked like a massive crimson centipede.
As he approached, Master Owen couldn't help but wonder: what kind of Spirit Fire was this?
The flame in the fissure was of an indeterminate tier, resembling the lowest Tier-1, yet also appearing to be the incredibly powerful Tier-8.
It seemed that various types of Spirit Fire were mixed together, which made no sense.