A fictional historical novel is a fictional historical novel. The plot is often separated from the real historical background. Instead, it is based on a brand new historical background. Through fictional historical events, characters, and plots, it constructs a historical world that is different from the real world. Aerial historical novels were usually used to explore the mysteries of history, to show the different possibilities of history, to explore the differences between history and reality, and to explore the complexity of human nature. In fictional historical novels, there are often some famous people, events, and characters in history, but their images and stories are fictional and different from the real situation in history. There were many types of alternate historical novels, including time-travel novels, science fiction novels, martial arts novels, mythological novels, and so on. Among them, time-travel novels were the most common type. The protagonist usually traveled to different historical eras in some way and used his own perspective to explore history, change history, or restore history. The difficulty of creating fictional historical novels was relatively low because it did not need to be completely in line with historical facts. It only needed to express one's own ideas and creativity through fictional plots and characters. However, due to the high degree of freedom in the creation of fictional historical novels, it was often difficult to guarantee their quality. Some novels might be too absurd, while others might distort the historical truth too much. It required readers to have a certain amount of historical knowledge and cultural accomplishment in order to effectively read and understand.