Book excerpt: This extensively illustrated primer is the first English edition of Sun's classic 1919 book which explores both the theory and practice of the style, with emphasis on movements and postures. Tim Cartmell's translation provides both a standard by which practitioners can judge themselves and valuable information relevant to all versions of taijiquan. Tim Cartmell has done the American Taijiquan community a great service translating Sun Lutang's books into English.