To write a sadistic story, you must first make the reader resonate and emotionally invest. You can refer to the following techniques: 1. Create a tragic background: Set a tragic background such as life experience, family, experience, etc. to let the reader feel the misfortune and pain of the protagonist to increase the sense of immersion. 2. Focus on contradictions and conflicts: There should be some contradictions and conflicts between the protagonist and the villain, such as personality, ideas, interests, etc., so that the readers pay more attention to the development of the story. 3. Use emotional description: Through the emotional description of the protagonist and the villain, let the readers feel the emotional entanglement between the protagonist and the villain to strengthen the emotional resonance. 4. Increase the charm of villains: villains can create unique charm and personality to make readers more easily attracted and invested. 5. Setting up a reversal: The development of the story should have a seemingly happy ending, but in fact, it should be a reversal that surprises the reader. The protagonist should have a long period of loneliness and pain in the story so that the reader can pay more attention to the emotional changes of the protagonist. 7. Use psychological description: Through the psychological description of the protagonist, the reader can understand the inner world of the protagonist and enhance emotional resonance. Writing sadistic novels required a variety of techniques to make the readers have a strong emotional resonance. At the same time, one had to be careful not to overuse violence, blood, and other elements to avoid negative social effects.