Dr John Wan-Yuin Chang started Tai Chi Chuan Study Association over 40 years ago in Baltimore, MD.
 
Dr. Chang studied Tai Chi Chuan, Hsing-I Chuan, and other forms of Chinese martial arts ever since he was a young man in China. His main practice was the traditional Yang style Tai-Chi Chuan Long Form, and the 37 postures, playing each posture on both sides. Dr. Chang taught and demonstrated the essential principles of Tai Chi, principles of harmony, not just within the forms, but also within his life.
 
Dr. Chang emphasized the philosophy as well as the martial principles of Tai Chi Chuan, The Grand Ultimate Fist. He taught and encouraged all his students to study and learn the Tai Chi Classics, the essence, and the principles of Tai Chi Chuan.
 
Without the essential principles, one cannot properly learn and understand the art of Tai Chi Chuan.