The reason why time-travel novels were popular was that they could often bring readers a lot of novel and exciting experiences. At the same time, they could also let the audience feel different cultures and histories in the fictional world. However, there were many factors that needed to be taken into account when making a film or television series. For example, the accuracy of the restoration of history, the creation of characters, the restoration of scenes, and so on. All of these required in-depth research and consideration. In addition, due to the large time and space span involved in the transmigration theme, it was also a problem to grasp the degree and avoid over-interpretation. Of course, there were also some directors and screenwriters who tried to integrate the theme of time travel into their films and television works, such as Time Travel, The Time Traveler's Wife, etc. Although these works had achieved some success, their audience was still different from time travel novels. Therefore, although time-travel novels were very popular, film and television still needed to find a way to present the time-travel theme that was suitable for their own audience.