Girl, Don't Look in the Mirror in the Middle of the Night

Su Man, a girl from a poor family, was sent to an aristocratic private school by her late mother with all her dowry. On the first night of school, someone called her name in the mirror. On the second day of school, the little maid who had brought her hot water the night before disappeared from everyone's memory. Only then did Su Man know that this was the most prestigious school for girls in the country. Every midnight, a mysterious law called "Night Rules" is activated. Violators will be forgotten by the world and will not even leave a tombstone. She should be afraid. But she suddenly heard her mother's voice coming from the crack in the wall: "Manman, mother will teach you to follow the detailed rules..."