Fair Lady Works the Shuttles

"The standard Yang set today is Yang Chengfu's final revision of 85 postures, which he demonstrated in his book published in 1936. Most of the other books published since then, including many Western ones, are either variations or reflections of the author's own personal expression of the set. ... One should note that right from its creation, Yang Taijiquan has always been combat-oriented. Yang Chengfu always emphasized that the set should be practiced with its martial applications in mind. These applications may be taught through the fast set, individual posture explanations, tui shou (push hands), san shou (fixed-step sparring) and san da (free sparring)."
- Alex Yeo, "The Complete Yang Taijiquan System, Part 4.", Tai Chi, June 2003, p.45

In the Yang long form, Section III, Part 1, Fair Lady Works the Shuttles is done four times in a sequence to each of four corners. I really feel the martial roots of this movement.

I use this movement on a heavy 100 pound bag, and really blast away at times - no Tai Chi, all Shaolin Kung Fu external muscle and bone power. It feels so good!! Pure attack and smash.