Cannabis November 14, 2016November 14, 2016 thcscience_admin Yang Yunsong (Chinese: 楊筠松, p Yáng Yúnsōng) was a Tang-era Taoist writer credited with the authorship of the Green Satchel Classic.[1] References[edit] ^ Aylward, Thomas. The Imperial Guide to Feng Shui & Chinese Astrology, p. 297. Sterling Pub. Co., 2007. Authority control databases SNAC