The prologue was usually the beginning of a novel. It was used to introduce basic information such as the protagonist, background, and story outline. It also provided the reader with an overall reading framework and atmosphere. Its main functions are as follows: 1. Enthralling: The prologue draws the reader's attention through fascinating plots and exaggerated descriptions, making them want to continue reading to learn more information. 2. Setting up the background: The prologue allows the reader to understand the background of the story, including the time, place, social and political situation, etc., to lay the foundation for the development of the subsequent story. 3. Guiding Reading: The prologue can guide the readers to be interested in the story by describing the appearance, personality, psychology, and other characteristics of the protagonist. It will make them want to further understand the plot and the relationship between the characters. Therefore, the role of the prologue is very important when reading a book. A good prologue can provide the reader with an overall reading framework and atmosphere, allowing them to better understand the background and theme of the story and thus better enjoy the reading process.