They were souls, to begin with, so it was naturally impossible for them to leave anything behind. Even their physical bodies would be burned to ashes.
This was Qin Chen's strength.
The Green Lotus Demonic Flame was left behind by a demon race's great emperor. There was probably nothing in this world that could withstand it.
The chaotic demon king who had been the first to attack had died the most grievously because the Green Lotus Demonic Flame was right beside Qin Chen's primordial spirit.
He had wanted to possess Qin Chen's body, but he was sent straight on his way to the afterlife.
"You've probably caused a lot of harm by building this rubbish Lingyuan Temple here. Just based on this, it's only right and proper to eliminate you and protect the Dao."