A flashback was a common narrative technique in novels. It could make the story more interesting, increase the readers 'reading ability, and make them nervous. Here are some of the advantages of flashbacks: 1. Focus on the main point of the story: The flashback of the novel can shift the main point of the story from the back to the front by suddenly changing directions, so as to better show the development of the story and the psychological changes of the characters. This technique allowed the reader to better understand the core content of the story and increase the attraction and shock of the story. 2. Create suspense: The novel flashback can create suspense and curiosity by suddenly stopping the drug. The reader will habitually make inferences and guesses according to the plot at the beginning of the story, but when the story suddenly changes, the reader will fall into a state of confusion and not know what will happen next. This uncertainty can increase the reader's interest and excitement. 3. Enhancing emotional expression: The novel flashback can enhance the emotional expression and emotional changes of the characters by quickly changing the scene. When the story looks at the problem from one person's point of view, it often ignores the surrounding environment and emotions. However, when the story suddenly turns to another person's point of view, the reader will be able to understand and feel the emotions and psychological state of the character more easily. 4. Prominent character: The novel flashback can highlight the character's personality and psychological changes by quickly changing the scene. When the story looks at the problem from one person's point of view, it often shows a superficial character and behavior. However, when the story suddenly turns to another person's point of view, the reader will be able to understand the contradictions and complexity of the character's heart more easily, thus better understanding the character and inner world of the character. A novel's flashback could allow the reader to better understand the plot and the character's heart in different ways, increasing the attraction and shock of the story. However, if used incorrectly, it might affect the legibility and comprehension of the story.