When writing a novel, filling in the hole meant that the author decided to supplement or reverse the story to complete the ending of the whole story when the story had developed to a certain extent. In this process, the author might fill in the gaps left behind by the previous story, resolve the contradictions set by the previous story, or modify and adjust the plot to achieve a better ending. The purpose of filling in the holes was to allow the readers to have a reasonable and complete ending after the story had ended. At the same time, it could also maintain the readers 'interest and curiosity in the story so that they could continue reading. Of course, the process of filling in the holes might also make some readers feel dissatisfied or disappointed because they might think that the development of the story did not achieve the expected effect or feel that the author's sudden change at the end of the story was difficult to adapt to. Poth-filling was a common technique in writing novels. It could help the author establish a complete and logical storyline, and also help the readers better understand the author's intentions and thoughts.