Self-defence
Whirling Arms and Whirling Hands are the two exercises in the Lee style of T'ai Chi Ch'uan which are used to teach basic principles of self-defence.
Like I fou shou, Whirling Arms (Lun Pei) and Whirling Hands (Lun Shou) encourage the development of quick mental and physical reactions and a high level of sensitivity. Both are characterized, as their names suggest, by circular movements of the arms and hands.
The two arts include techniques to ward off, parry and deflect thrusts which may be made towards your body, and with constant practise you can develop the ability to recognize your partner's intentions before they are carried out. You will learn how to feel and exploit the weaknesses in their movements and postures, and in so doing you will come to understand your own weaknesses and develop greater concentration and awareness. You will build the foundations for a stronger balance, learn how to synchronize your body movements, and become much more sensitive and perceptive. In addition to all these, the control and utilization of your Ch'i energy plays a very big part in your practise.
Read more about this topic: Lee-style T'ai Chi Ch'uan