Always good videos on EF, especially from the Yiquan Academy. Looks like mostly HIA from an yiquan perspective.

The specific HIA skills seem to come from the tuishou practice:

The key seems to be the sudden whole body fa li that moves the center and entire body of the other person, in the best case, taking the back, rather than literally trapping only a hand. It’s hard to find a good jkd or wing chun trapping video, but it’s clear if Yao controls the center of the opponent and destroys his structure from an IMA point of view, that is much more desirable than temporarily trapping to “score”. The yiquan take on tuishou doesn’t seem to lean too much toward the percussive or too much toward flow with no technique. It seems to strike a perfect balance. I wonder how JKD theory may have been different if Bruce Lee had studied yiquan. Certain IMA principles are the only areas I’d speculate JKD theory doesn’t really incorporate, though this idea seen in the videos is probably the same idea as “position before submission” mentioned in bjj, but in a very different context.

Putting this in the judo and bjj contexts (where I can actually try some stuff out), if gripfighting is key in judo, and keeping/passing guard is key in bjj, it seems tui shou and an analogous tui jiao should help with either. I have some limited success with these so far. I’d like to be able to do that taking the back in judo and focus on sweeps in bjj as sweeps control the center and improve position first and remind me of flowing tui shou more than qin na. So far I don’t like closed guard and it doesn’t seem good against larger people. Burton Richardson on JKD Unlimited talks about focusing on teaching the butterfly guard first as a result of that last observation he made when at first training women differently, then deciding it made sense to train everyone that way. Taking all of this to construct my homemade DIY amateur mma style, I can also look at everything simplistically from trapping to grappling ranges as passing the guard, building from tuishou in standup and rolling in groundwork.