A mountain demon that killed Wang Xuan’s father and elder brother three months before the story. It is mentioned as the cause of their deaths, and its existence underscores the dangerous supernatural nature of the world. The demon is not described in detail, but it is a real threat in the deeper parts of Black Wind Mountain. It also serves as part of the family’s tragic backstory and the reason for the brother and father’s absence; Wang Xuan later may seek revenge or answers about its identity.
