C1759 Blue Lotus Inextinguishable Fire

"The average lifespan of a person's Anti-evil Spirits Clan is around four thousand years. The oldest Anti-evil Spirits in my clan came from that era, and there are less than a hundred of them. Half of them are already old, and the remaining half are unable to bear children … If this continues, after this batch of Anti-evil Spirits is exhausted of their age