Yeung wrote:Practitioners of Guo Yunshen lineage perform the half step beng quan by dragging the rear leg forward. The idea is that Guo Yunshen was dragging an iron ball chained to his leg, that created a very powerful stretch of the gluteal muscles and find a way to balance himself without the iron ball. So the half step is to drag the rear leg half a step forward. Maybe that sort of answered the question of not pushing the rear leg forward, Actually when one push the rear leg forward concentrically it blocks the rotation movement generated by thee gluteal stretch.
I think it’s more “push off” the body forward with the rear leg...one can of course do a more stationary “falling step” with the forward leg, so not too much push with any leg......then one can be completely stationary, wher both forward and rear leg kind of “push against” each other.