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Since the physical activities described may at times be strenuous and sophisticated for some individuals, it is essential that before following any of the activities, physically or otherwise herein described, the reader should consult his or her physician for advice on whether to embark on such activity.
The author wishes to thank the following friends and students who offered their invaluable advice in the writing, translating, and publishing of this book: Bernard Kwan, Andrew So, Anthony So, Osmond Lam, and Martin Luk.
Thanks to Olga Novikova and Annabel Cheng for the graphic design. Special thanks is also due to Mr. James Carss and Gordon Tso, for their excellent job in proofreading and assistance in illustration, and to Allan Lui, Anthony Liu, Kelvin Yu, Vincent Ng, and many other friends and supporters at home and abroad for their valuable encouragement and suggestions.
