Chi sau teaches one to feel and control the opponent. In order to control an opponent who is larger and stronger than you the amount of their body facing you should lie within the frame of your shoulders. In order to set this up you need to either come in from angle or make the opponent turn to one side. In that way 2 or 3 of your body lines will be directly facing the opponent. If you move directly into a larger opponent when their body lines directly face you you will be bounced backward. If you rapidly swing your arms in a chaotic fashion to win over an opponent you cannot learn the finer aspects of feeling, sensitivity and control.
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