The difference between short, medium-length, and long novels was usually in the following aspects: 1. The length of a novel can be as short as dozens of pages and as long as millions of words. Short stories usually focused on the plot and characters, and were short and suitable for quick reading; medium-length novels were usually between 1 million to 5 million words, and were featured by the exploration of characters and topics, which were suitable for slow reading; long novels were usually longer and involved more characters and plots, which required more in-depth excavation and thinking. 2. Narration style: Short and medium-length stories usually adopt a more concise and compact narrative style that focuses on the plot and the performance of the characters; long stories usually adopt a more complicated and detailed narrative style that focuses on the exploration of the characters and theme, as well as the structure and rhythm of the entire story. 3. Story depth: Short and medium-length stories usually focus more on the plot and character performance, as well as the entertainment and legibility of the story; long stories focus more on exploring the inner world of the characters, the theme and historical background, as well as the structure, depth and complexity of the entire story. 4. Reader experience: Short stories and medium-length novels are usually suitable for young readers because their plots and rhythms are more relaxed, while long novels are more suitable for older readers because they involve more topics and historical backgrounds and require more in-depth thinking and understanding. The difference between short, medium-length, and long novels was usually in terms of length, narrative style, story depth, and reader experience. Each genre had its own unique characteristics and charm, which needed to be chosen according to specific needs and preferences.