The reason for transmigration in fantasy novels was usually a key plot that made the readers resonate with the protagonist and attract them to continue reading. Here are some possible writing techniques: 1. Sudden events: The transmigrator is suddenly transported to another world at a certain moment. This kind of plot usually makes the reader feel surprised and uneasy. In the novel, the protagonist might encounter some strange creatures or magic or face some unknown danger. 2. Search for answers: The traveler may travel back in time to try to find some secrets about his identity or existence. This kind of plot could make the reader feel the determination and courage of the protagonist, and at the same time, it could add depth to the story. Change History: The transmigrator may try to change the course of history to save a country or nation or prevent certain disasters from happening. This kind of plot could make the readers feel the sense of responsibility and mission of the protagonist, and it could also add drama to the story. 4. Search for true love: The transmigrator may travel to another world to find his true love. This kind of plot could let the readers feel the power and beauty of love and also add romance to the story. Search for the truth: The traveler may travel back in time in an attempt to uncover some truth or mystery. This kind of plot could make the readers feel the curiosity and curiosity of the protagonist, and it could also add suspense to the story. The reason for transmigration in a fantasy novel should be able to attract the readers 'interest and help them better understand the protagonist's actions and motives.