Making the plot of a novel very cruel could usually be achieved through the following methods: 1. Increase the emotional setbacks and pain of the characters: Let the characters experience some emotional setbacks and pain in the plot of the novel, such as losing important people, being betrayed, being abused, etc. These setbacks and pain can make the readers feel more empathy and make the plot more heartbreaking. 2. Increase the emotional entanglements between the characters: Let the characters have complex emotional entanglements such as mutual crush, mutual harm, mutual redemption, etc. These emotional entanglements can make the readers more emotionally involved and make the plot more heart-wrenching. 3. Increase the sadness and loss in the plot: Add some sad and lost scenes to the plot, such as losing relatives and friends, losing important things, losing goals and hopes, etc. These scenes can make the reader feel more depressed and helpless, making the plot more heartbreaking. 4. Increase the uncertainty and unpredictability of fate: Make the fate of the character unpredictable and unpredictable. For example, the character suddenly encounters misfortune, suddenly falls into trouble, suddenly loses everything, etc. These scenes can make the reader feel more desperate and helpless, making the plot more heart-wrenching. In order to make the plot of the novel very torturous, one needed to add some emotional setbacks and pain, emotional entanglements between the characters, sadness and loss in the plot, and the impermanence and unpredictability of fate. These scenes could make the reader more emotionally involved and feel a stronger emotional impact, making the plot of the novel even more torturous.