http://www.youtube.com/watch?v=a9tQ70MQI-w
There are fundamental things wrong shown.
Yang teachers would cringe. Two giant body mechanics movements incorrect.
This is like karate Yang TJQ. it compromises what makes Yang and all TJQ work in the first place. And, like I said about my four questions concerning SD not knowing the answers to them, the answers to each one of my four questions is violated (simply not done) in the movements shown.
Here's some remedial lessons (seriously, please, can you even see why this is correct Yang and his is fundamentally wrong):
http://www.youtube.com/watch?v=SNStVR6BANQ
Groom's not only got the posture incorrect, but the transitional internal movements are done wrong, for the wrong reason, and missing the the transitional movement that makes it work in the first place, its too external.
Look at real Yang TJQ:
http://www.youtube.com/watch?v=97kMU3WgmtE (this starts with brush knee first)
http://www.youtube.com/watch?v=7pna9ajZHKY (TRADITIONAL YANG from the Yang family itself - at 2:44 look at the brush knee postures and movements)
Okay, at this point, I give up, I don't want to discuss SD at all.
Do everything wrong, I don't care.