I think this is the part most people have heard about Chi running. You lean forward and let gravity pull you down. You put your foot down underneath you and if you are in a proper one legged posture stance you will have perfect support without bone jarring impact. This is the part that is so hard to explain or to read about and it turns out I was not doing it right. This is very hard to explain, but here goes. If you look at babies when they first learn to walk they will totter forward, sort of a controlled fall, with their legs sort of falling into place underneath them to stop them from falling on their face. Similar idea here. If your right leg is up behind you and you just let it swing down and fall into place then once again you let gravity do the work, not muscle.
My Disclaimer: I am not a Chi Running instructor or an expert runner or a coaching professional of any kind. These represent my notes, primarily for my own edification. If they are helpful to you then that is great and I am glad for that, but I don’t guarantee that everything here is absolutely accurate as they are a reflection of my own experience and memory.