It sounds like maybe he's trying to describe Za Shi Chui or 'Flying into the forest" transition into a splitting fist from Sun Style's second section of the 12 forms commonly called eagle form or Ying xing. Application to that movement is a downward backfist onto the bridge of the nose with the rear hand as the front hand clears a grapple attempt in a downward sweeping motion.
As with all the transitions Sun intended you to be moving from San Ti to draw the grapple to the lead hand. Typically the CMA's theories and principles are based upon "space occupation" by placing the lead hand partially extended and on centerline between and the opponent it forced you to deal with that hand. In this case thier theory was they knew where you would be when clearing that hand and thats where the rear hand struck and from an unusual angle to further the surprise and chance of success.
|