Shoulders: Should be relaxed, resembling the arms hanging from the shoulders like ropes. This not only keeps the arms and hands flexible but also maintains the body's balance even when the arms are moved or pressed by external forces. Elbows: Elbows should frequently sink with the relaxation of the shoulders. The extension and contraction of the arms should shift direction from the movement of relaxed shoulders and sinking elbows. This ensures that the body's power reaches the hands appropriately and can adapt to changes when facing an opponent.