To set the suspense of a novel, it was necessary to create a fascinating background story and leave some unknown information and clues for the characters and events in the story so that the readers could guess and anticipate the following plot. Here are a few tricks to help set the suspense: 1. Leave clues: Leave hints or clues at the beginning or middle of the story to let the reader guess what will happen next or to question the character's background, motives, and goals. For example, at the beginning of a novel, a seemingly ordinary dialogue or scene could be used to hint at the background and theme of the story, or a meaningful smile or hint could be left after an important scene. 2. Create a tense atmosphere: Increase the suspense of the novel by creating a tense atmosphere. For example, setting up some unexpected events in the story or letting the characters face some unprecedented challenges to make the readers feel nervous and expectant. 3. Use contradictions: Let the characters in the story have some contradictions and conflicts, leaving some unknown information and clues. For example, if there was a conflict of interest or different values between the two characters, the reader would guess what would happen next between them. 4. Use uncertainty: Add some uncertain factors into the story, such as whether the character's goal or plan will be realized, whether the desired result will be obtained, etc., to make the reader guess and expect. 5. Use Reversal: Reversal at the end of the story to leave some unexpected information and clues. For example, at the end of the story, the character's behavior or decision would have an unexpected change to surprise the reader. To set the suspense of a novel, you need to create a fascinating background story and use the above techniques to leave some unknown information and clues for the readers to guess and anticipate the next plot.