Just getting a toe in the water- as this is not fighting just a demo.
http://www.youtube.com/watch?v=eIc5NIfr ... re=relatedNot that it's going to matter much, but there are deeper levels than what he is showing here. This is semi cooperatve play for him to show grappling "potentials" of Taiji's method. if the guy went for a single leg or started throwing punches the use of internal power comes into play as well but probably isn't going to look as clear as this. Since Internal power isn't married to waza, the waza can be anything you learn and choose to use. Your body training doesn't go out the window if you start to do jujutsu. The expression of it just changes.
Fa-jing with a punch into his chest, is the same as a fa-jing with 6 0z gloved fist, a shoulder strike can be an elbow to the head when they enter for a single leg. Natural and fluid resistence to throws -say a suplex- offer an IP fighter increased chances for set-ups all his own. Listening is the same whether in slow motion or all out exchanges. You just have to learn to read or listen faster. The upshot is the input is grosser and easier to spot, the down side (or more upside to me) is facig powerful, rapid changes. A good grappler's movement and intent is full of fients, set ups from punches and generally ...subject to change without prior notificiation
There are guy's training internals and playing in wilder fields with uncooperative nonbelievers.