The Yue were known for their swordsmanship and producing fine swords. According to the "Spring and Autumn Annals of Wu and Yue", King Goujian met a female sword fighter called Nanlin (Yuenü) who demonstrated mastery over the art, and so he commanded his top five commanders to study her technique. Ever since, the technique came to be known as the "Sword of the Lady of Yue". The Yue were also known for their possession of mystical knives embued with the talismanic power of dragons or other amphibious creatures.