http://www.youtube.com/watch?v=0bDzB0SObHg&NR
there are 5 hand methods or Shou Fa.
1.Kuo Pian. one hand to restrain, the other hand/palm to cut horizontally with rotation around the elbow or Pian Zhang.
2. Dan or Shan? Shou.
3. Shoulder hitting or Jian Zhuang.
4. Kua Chuo. one hand penetrating above the elbow, the other hand stabs/chuo the abdomen.
5. Tuo Pi. one hand to hold/tuo, the other hand to do downward chop/Pi.