The Sword Ancestor idiom referred to a famous swordmaster in ancient China and was one of the common characters in martial arts novels. His name was often mentioned as "Sword Ancestor","Sword Immortal","Sword Saint", etc. In wuxia novels, swordsmanship was a very important skill, and the Sword Ancestor was an expert who had mastered this skill. They were considered legendary figures in the martial arts world. The Sword Ancestor was usually described as a mysterious and agile master who could easily wield a sword that was hundreds of feet long with just one finger and could attack and dodge at an amazing speed. In the novels, Sword Ancestors often had extraordinary martial arts and wisdom. Not only could they skillfully use sword techniques to attack, but they could also use various techniques and tactics to deal with various challenges. In modern society, due to the popularity of martial arts novels, the Sword Ancestor had become a common cultural symbol used to describe those who had superb martial arts and extraordinary abilities.