Source Originated from the “Bazheng Powder” (八正散) of “Formularies of the Bureau of People's Welfare Pharmacies”, compiled by Chen Shiwen (陈师文) et al. in Song Dynasty, in 1151 A.D., in 10 volumes, 788 recipes, most of which were pill and powder form, ready for use and storage. Carried in “Chinese Pharmacopoeia” 1995 edition and “Sichuan Drug Standard”(1983).