Brief Introduction to the Main Contents of Sword Classics: Qingping Sword Technique: In the development of China Wushu culture, although there are many written materials describing Wushu, there are few classic works, especially those named after classics. Sword Sutra is one of Kau Lam's works, which has always been regarded as a treasure by martial artists in past dynasties. Sword Sutra is one of Mr. Bu Xuekuan's favorite classics.