"What good would that do? No one truly dies in this place. You'll only come back and nothing will be gained at all. Death is pointless. Killing gains no one anything. A lesson that you should learn."

Wei Wuxian doesn't kill. Not anymore. It is the one thing he has vowed as each of his experiences in all of these worlds has shaped him. He barely sees any reason to even fight any more. THe fact that he has gotten this worked up is going to bother him later when he has had a chance to cool down.

"But what you need to understand is I know what lies in your future. We aren't from the same time. Possibly not even the same place. And you should remember that should anyone else we know arrives."

Because it is important. Anyone that is dead on their world can come to this place.