My answer may not be completely accurate. According to my knowledge, fantasy novels are usually narrated in large numbers of chapters and are usually interwoven with multiple story lines. Therefore, a complete fantasy novel might contain hundreds of thousands or even millions of chapters. As for the Eastern fantasy genre, it usually contained a large number of myths, legends, and historical elements, so its storyline and character setting might be more complicated and diverse. A complete oriental fantasy novel may contain a large number of characters, worldviews, and storylines, so it may take longer and more creative effort to complete it. However, no matter what kind of novel it was, the author would need to spend a lot of time and energy to complete a complete work. Moreover, it would need to be constantly revised and improved. Therefore, the length and quantity of the finished novels on the fantasy novel rankings might not be the most important factor, but their quality and influence.