Standard Sut Knee Traditional Writing: 膝 http://wingchunlexicon.com/wp-content/uploads/2016/12/Knee-SAT1-_mdash-Wing-Chun-Elements_-Glossary.mp3
Standard Sut Dang Knee Attack Traditional Writing: 膝頂 http://wingchunlexicon.com/wp-content/uploads/2016/12/Knee-Attack-SAT1-DING2-_mdash-Wing-Chun-Elements_-Glossary.mp3