Tai CHI Ball Qigong, David W. Grantham, HardbackAuthor: David W. Grantham.
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After learning from Master Kao, Dr. Yang continued his study and research of Taijiquan. Dr. Yang has mastered the Taiji barehand sequence, pushing hands, the two-man fighting sequence, Taiji sword, Taiji saber, and Taiji Qigong.
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