凡吾人所習之青萍劍。昆吾劍。謂之劍術可。謂之劍學亦可。然而皆外功也。是不可不以內功輔之。必內外兼修。而後劍學乃得以互相調劑。而益臻完美。以上二十七動作。有明亮於眼者。有開通耳竅者。有養氣助肺呼吸者。有益於五臟六腑及腦髓者。要皆內功之要旨。入學之階梯也。九式為劍學之基礎。亦即內功之進階。總之。於手足腰腿各部。有百益而無一害。學者循序以進。自有佳境。勿待編者喋喋也。We can consider the practice of Qingping Sword and Kunwu Sword to be “sword arts” or “sword knowledge”, but it is in either case external training. […]