Doing a push hands with my sifu… ok it was a bit beyond push hands but its basis was push hands.
When you all of a sudden find yourself in a position where your sifu has one leg behind you has control of one of your arms and his other hand on your forehead and with only a slight push you fall down. It is not that much of a stretch to realize what this would have been had he applied force or used fajin.
As many have said push hands is not fighting.
Look at this, it likely has been posted here before but this is push hands and just think of how it would be should Tung Hu Ling actually decide to use his power or take it the next step up to fighting, and he could do that as well.http://www.youtube.com/watch?v=AGfE6C18ePw