To make the spiral motion effective we must move our body. When we move our body this way we are effectively swalling the opponent’s attack into empty space before we suddenly spiral back the other direction to release power.
If we apply this idea to the technique of Tan Da in Ip Man Wing Chun’s wooden dummy form from the 1st section we can neutralize more effectively.
Normally, this type of body movement is learnt using the Bart Jam Dao in Wing Chun. However, as many are unaware of this part of the butterfly knives training it is not unusual to rarely see this any more in today’s Wing Chun.