Dr Yang says read "The Root of Chinese Qigong -- the Secret of Qigong Training" before his YJJ book. I find title in book listing .... "The Root of Chinese Qigong:
Secrets of Health, Longevity, & Enlightenment" but do not find "The Root of Chinese Qigong --
the Secret of Qigong Training". Which is the book mentioned in YJJ Qigong book or is this one in the same?