This stance is used to develop your center of balance while learning to effectively use both arms for offense and defense. The first form is done entirely in this stance, emphasizing its importance. It is also used to develop the ability to drive power from the legs to the point where the opponent is being attacked.

The forward hand is extended and positioned horizontally on the centerline while the other hand is held further back. This creates a triangle like structure which allows deflection to either side of the body.

Tan Sau can be applied in a variety of ways, but the basic application is to redirect an attack away from the body.

Paak Sau or slapping block is used to slap a strike away, allowing the hand to return to the centerline immediately.