Sheung Gaan Sau High block and low sweeping block. There are two kinds of gaan sau: namely Do Gaan & Huen Gaan Traditional Writing: 雙耕手 http://wingchunlexicon.com/wp-content/uploads/2017/01/SOENG1-GAANG1-SAU2-_mdash-Wing-Chun-Elements_-Glossary.mp3 OLYMPUS DIGITAL CAMERA