Chaos supreme realm experts were basically immortal. If he wanted to kill a chaos supreme realm expert, he would have to destroy their corresponding supreme law and cause it to change.
Even a chaos supreme realm expert could not change the supreme laws of the chaos.
This also meant that, under normal circumstances, no matter how strong he was, he would not be able to kill a chaos supreme real expert, even if the latter was weaker than he was.
He could suppress and seal them, but could not kill them. This was the uniqueness of the chaos supreme realm. Only those who transcended the chaos would be able to do so.
However, those who had transcended the chaos would have already left the chaos, and would have no reason to interfere with the matters of the chaos.
Therefore, unless the chaos was destroyed, or the supreme laws of the chaos were changed or destroyed, chaos supreme realm experts were immortal.
