Not all time-travel novels are escapist, but time-travel novels are indeed a popular form of literature. Some time-travel novels may explore the challenges and problems that people face in real life by going back to the past or the future to solve these problems. These novels might involve politics, history, love, science fiction and other topics, so they attracted a large number of readers. In addition, some time-travel novels might also use fictional plots to show the complexity and variety of human nature to inspire readers.