I was hoping you might chime in and offer a comment, Xue Sheng.
Its amazing how Tai Chi players interpret the postures in so many different ways. At about 0:13 - 0:15 that appears to be a throw derived from Yang's Brush Knee and Push posture tossing the guy off to the side. Honestly, I had never thought about it like that. And the next demo is him thwacking the guy in the side of the neck with the same posture.
Not sure if that's in the latest Official Wushu Duanwei Exam! (lol)
Trick he is from Japan, learned in mainland China & lives in Okinawa where you will be "examined" if warranted. He's making it work. He also does a couple of other different systems with the energy is a little more overt.
I'm not stepping in to point out he's incorrect or different than I happened to learn.