To flashback was to reverse the sequence of events, first describe the process and background of the events, and then introduce the results of the events according to the importance of the events or the sequence of development of the plot. What were the benefits of writing in flashback: 1 emphasize the importance of the plot or the importance of the protagonist. By emphasizing the outcome of events or key decisions of the protagonist, the reader can better understand the plot and characters and explore the story more deeply. highlight the climax of the story. In the process of flashback, the reader is more likely to pay attention to the climax of the story and thus more likely to be attracted and immersed in the story. Increase the fun of reading. By reversing the sequence of the story, the readers could understand the plot and logic of the story more easily and follow the progress of the story more easily. 4. Prominent the image of the character. By putting the character's actions and decisions in front of the events, the reader can better understand the character's personality and motivation, and thus better understand the character and story. It should be noted that although flashbacks can enhance the attraction and logic of the story, it can also distract the reader and make the story less smooth. Therefore, when using flashbacks, one needed to carefully master the technique to balance the attraction of the story and the fluency of the narrative.