The Taoist yogic discipline of Ba Gua is an internal form of the ancient art of kung fu--as are the much older t'ai chi and Xing I. Ba Gua is the most arcane and yogic of three sister arts--t'ai chi and Xing I are the others--and is distinguished by serpentine turning and circling momvements and its own internal energy exercises, Ba Gua Qi Gong.
"Authentic, well-ordered and written, Bracy and Liu's Ba Gua should fill a void. There is almost no literature on Ba Gua in English."
-Robert Smith, author, Chinese Boxing: Masters and Methods