In the later stages of writing urban novels, authors might mutate into fantasy novels. This might be because the plot and character setting of urban novels could no longer meet the author's creative needs. He began to explore a broader imagination and narrative methods, which led to changes in the plot and character setting. Fantasy novels were usually a broader genre of literature that included a large number of fantasy, magic, mythology, and other elements. These elements could stimulate the author's imagination and creativity, allowing the author to develop more freely. Therefore, when an author felt that he could not satisfy his creative needs in urban novels, he might choose to turn to fantasy novels to enrich his literary expression by adding more fantasy, magic and other elements. Of course, not all authors would do this because everyone's writing style and preferences were different. Some authors might continue to stick to urban novels and stick to their original narrative style and literary style.