The reason why there were so many people with two surnames in martial arts novels was mainly because in ancient China, it was very common for people to have two surnames. In wuxia novels, many people with two surnames were the core figures of the family. They had unique martial arts and background, so they were often described as legendary figures. In addition, Wuxia novels often used people with double surnames because of the need of the plot. For example, in some martial arts novels, there would be people who needed to use a double surname to promote the development of the story because of the protagonist's background or encounter. The use of people with two surnames could not only increase the narrative interest of the novel but also deepen the reader's understanding of the plot. People with double surnames appeared in martial arts novels mainly because it was a very common surname in ancient China, and it was also a symbol of family lineage and wealth. In novels, people with two surnames were often described as legendary characters to increase the narrative interest and depth of the novel.