Fantasy novels usually referred to fantasy, science fiction, or martial arts literature, which contained a large number of supernatural elements and fictional characters, scenes, storylines, and so on. Sadism was a genre of literature that usually described the protagonist's growth and struggle in adversity, but in the end, due to various reasons (usually fate or love), he died tragically or suffered serious injuries and pain, making the reader feel a strong emotional resonance and sadness. Although fantasy novels and sadistic novels both contained a lot of fantasy elements, the former usually paid more attention to science and logic while the latter paid more attention to emotions and human nature. The descriptions often involved topics such as fate, love, family, friendship, etc.