I think your comments start to give myself and others a place to look, even if it's Chinese in origin. And from a book.
It's interesting that instead of just making an assertion, I give a credible source and instead of "thanks for the reference" I get snarked on with the idea that I only got if from a book. Trivialization strikes again.
On the other hand, as a separate topic but related, having watched some of the mostly arm-driven "spiralling" in some of the videos of Japanese koryu, D.R., and so forth, maybe some of the discussion about "from the center" is misplaced?