What is the specific function of flashback in a narrative?

The specific function of flashback in a narrative is usually to attract the reader's attention, make the reader interested in the plot and details of the story, and then understand the theme and emotion of the story more deeply. The flashback could arouse the curiosity and interest of the readers, making them want to know more about the background, antecedents, and consequences of the story. In this way, readers can better understand the characters and events in the story, as well as the emotions and theme expressed in the story. In addition, flashbacks can also highlight the main points and key parts of the story, emphasizing the key plot and character actions of the story, so that the reader can pay more attention to the development and ending of the story. This would also increase the impact and appeal of the story, making it easier for readers to be moved by the story. In short, the flashback of a narrative could attract the reader's attention, highlight the key points and key parts of the story, and enhance the shock and appeal of the story to achieve the purpose of improving the reading effect.