I really didn't want to practice immortality at Hogwarts

Introduction: "I am the half-brother of the beautiful Ravenclaw Zhang Qiu. I am a practitioner from the Lost School of Magic in Asia. I am a Hogwarts transfer student specially approved by Dumbledore, and I also get three Accompanying schoolmates. I have a very nice system that at least matches my noble personality. I want to protect my little brothers, even if Voldemort himself gets in the way, let him go to hell! I have a small question-I am for Mao Do you have to practice immortality in Hogwarts, a place as horrible as it is?" - Excerpted from "Memoirs of the Man Nobody Wants to Mention (You Know)"