Imagine you are holding a heavy bowling ball.
Don’t just imagine it. Feel it.
Now do Pi Chuan. At the point where you would throw the ball… Don’t.
Let it carry you forward. Go for the ride.
Stay low. Make sure all internal principles are sound.
When this is done properly the opponent will see you closing slowly from a distance & then suddenly you will be right on top of them.
Make sure you “feel the energy” and, of course, practice this skill with all 5 fists.