I got to look through a copy of the Chinese edition of this book a few years ago that Fong Ha showed me. I’ve been wanting a copy ever since. Fong Ha was a student of both Dong Yingjie and Yang Shouzhong.
I received my copy yesterday, and I'm looking forward to delving into the explanations. The photos at the top of each page, showing Yang Chengfu demonstrating with a partner, appeared in Yang Chengfu’s 1931 book, Taijiquan shiyongfa (Application Methods of Taijiquan). The explanation narratives accompanying the photos in that early book are very sparse and difficult to follow. The explanations in Yang Shouzhong’s book seem to be more developed, and are much clearer. Yang Shouzhong’s innovation was the addition of the photos of himself and a partner showing a “follow-up action” or an alternate application below the original Yang Chengfu photos.
The partner photos of Yang Chengfu are reprinted in Douglas Wile’s T’ai-chi Touchstones, but they are not accompanied with the shiyongfa explanations, which have not been translated, to my knowledge.
The photos of Yang Shouzhong are quite excellent! It’s a real pleasure to see his stances, posture, and in particular his hands and wrists—in the way he contacts the opponent. His skill is very apparent in those photos!