Fantasy, fantasy, martial arts, and Xianxia were different types of online novels. The main difference was that they described different worlds and backgrounds. Fantasy novels usually take place in fictional fantasy worlds with elements of magic, mythology, and mysterious powers. These novels often involved supernatural elements such as magic, magical items, mythical characters, and some fantasy works involved science fiction elements. Fantasy novels usually focused more on the development of the characters and story, while fantasy novels focused more on the setting of the world and background. These novels usually contained a lot of mythological elements and more supernatural elements such as dragons, phoenixes, monsters, etc. Wuxia novels were usually based on the stories of ancient Chinese chivalrous men, emphasizing heroism and chivalrous spirit, but also the existence of magic and supernatural elements. Xianxia novels usually used the Xianxia world as the background to describe the stories of non-human characters such as immortals, demons, and ghosts. There were also some martial arts elements. The main differences between these novels were the worlds, backgrounds, characters, and plots described.