Time travel novels usually used the protagonist to travel to different historical or future worlds as the theme to show the lives, thoughts, and behaviors of people in different cultures, societies, and political systems. The following are some of the characteristics of time-travel novels: Time travel: The protagonist of a time travel novel usually travels to a different time and space in an accident or accident, such as ancient times, the future, or modern times. 2. Changing history: Time travel novels often try to change history and shape different historical trajectories. The protagonist could influence the development of history through his actions, decisions, and choices. 3. Multiple identities: The protagonist of a time-travel novel usually has multiple identities and plays different roles in different time and space. 4. Emotional conflicts: Time travel novels usually contain emotional conflicts. The protagonist experiences different emotional entanglements in different time and space, such as love, kinship, friendship, etc. 5. Exploring the Unknown: The protagonist of a time-travel novel usually encounters all kinds of novel things and characters to experience all kinds of challenges and adventures. Character image: The characters in time-travel novels are usually vivid and vivid. The character, quality, ability, and experience of the protagonist will leave a deep impression on people. The time-travel novel was a genre of literature with a wide audience and influence. Its characteristics included time-travel, changing history, multiple identities, emotional conflicts, exploring the unknown, and character images.