[Study of the Tangut Prescription Sanxiandan unearthed in Heishuicheng]

Prescriptions (ИHB.NO.4384) in the10th Volume of Heishuicheng Manuscripts Collected in Russia covered 9 pages. The 4(th) and the 7(th) pages recorded a prescription with no name and composed of Radix Aconiti, Atractylodes lan and Foeniculumvulgare. By checking Chinese Medical books, the name of this prescription was probably Sanxiandan and it may have been recorded in Chenshi Jingyanfang for the first time. Chenshi Jingyanfang is not extant now but its narrative style, which is different from that of the Tangut prescription, could be speculated upon from other literature that mentioned it. So those Tangut prescriptions could have been compiled according to some Chinese Medical books after Chunyou Periods.