How to Peng part 2

After lessons today, I tried to confirm with my teacher on how to peng. When your opponent presses with both hands, and one hand is pressing stronger than the other, then you can use the strength of the stronger hand to peng, ie. if his hand on your wrist is stronger, transfer his force to your elbow.

But what if the force on his two hands are about the same? My teacher said that is when you have to use kua to peng, to turn his force away. Relax the kua, then slowly turn your kua, which will turn your waist, and thus redirect his force away from you.