An unexpected ending sentence is a common plot in novels or movies. It can attract the attention of the reader or audience and trigger a strong emotional response. These sentences usually appear at the climax of the story to show the unexpected reaction or action of the protagonist or character to push the story forward. For example, in the novel One Hundred Years of Solitude, the protagonist Ursuline showed unexpected surprise and sadness in the last sentence, which made the readers more interested in guessing her fate. The dialogue between Forrest Gump and Jenny at the end of the movie Forrest Gump was also an example. The unexpected turn of the scene made the audience doubt and look forward to the ending of the story.