I Escaped from the Mystery and Was Admitted to Hogwarts

The sky is dark and bloody, the sun is hanging, and ghosts are singing about the past The vernal equinox has never arrived, and everything is buried in the cold smoke This world is very sick, but Li Changgong is glad that this is just a dream world. ··· "In your dream, I have been dead for many years?" "Yes, Professor Dumbledore." "Where's Tom Riddle?" "Dead." "Where's Professor Snape?" "Killed by Tom Riddle." "So... Harry Potter?" "He is still alive, but... It seems that everyone wants him to die! Including me..." "It seems that the world in your dream is not very good." "Yes, it was an era when hundreds of ghosts walked at night. Some people were among them, and they were happier than the ghosts. Sometimes I doubted that it was not a dream."