Become a Butcher in the Demon-Slaying Tower, and You Will Be Invincible After Birth

In the world of immortality, Ning Yi'an traveled through time, only to find that his parents were not human. He escaped from the fox's mouth and joined the sect, but he didn't want to be tricked by villains and become a little butcher in the Demon-Slaying Tower. As time goes by, it turns out that killing demons is the way to immortality. If he is in the Demon-Slaying Tower, he will be killed as soon as he is born and everything will be turned upside down!