In the sparring training or fight, knee attacking technique is normal to be apply. And how in Wing Chun Chong Sao function to protect yourself and how the way to attack the opponent is the shortest time and distance with your stable battle stance. Cheong Kiu Gum Sao Technique Application of Sil Neem Tao, might assist you, apply this technique to the opponent attack by his knee cap to your rib. From the Chong Sao position, Wu Sao turns to Cheong Kiu Gum Sao as below 45 degree to intercept his tight and go forward to push him away by Mun Sao. Yet, Mun Sao divert his incoming force as controling opponent's center line, goes with Thrusting Punch after pushing him away.