Wēi Yìlín 危亦林 (zì Dázhāi 達齋, 1277–1347, 元), Yuán-period physician of Nánfēng 南豐 (Jiāngxī); held the office of Medical Professor (醫學教授) of his home prefecture. Heir to a five-generation hereditary medical family. Author of the foundational Shìyī déxiào fāng 世醫得效方 (KR3e0059, 20 juan), composed 1328–1337 (Tiānlì 1 to HòuZhìyuán 3) and presented to the Imperial Medical Academy in Zhìyuán 5 (1339), then circulated as imperial-bureau-collated print. The work’s distinctive structural innovation is its organization by 8 medical specialties (大方脈, 小方脈, 風科, 產科 with women’s medicine, 眼科, 口齒-and-咽喉科, 正骨-and-金鏃科, 瘡腫科) — anticipating the later YuánMíng 13-specialty (十三科) imperial-medical-bureau classification system. The Zhènggǔ jiānjīnzú kē 正骨兼金鏃科 (Bone-Setting and Metallic-Arrow [Wound] Specialty) chapter is the most important pre-Yuán Chinese orthopaedic treatise, including detailed descriptions of fracture-reduction techniques and a celebrated paragraph on the use of Cǎowū tāng 草烏湯 (a Wūtóu-and-Mántuóluóhuā-based decoction) as a surgical anaesthetic — among the earliest written records of surgical anaesthesia in any culture. Wēi’s preface invokes a five-generation transmission descending from the legendary Daoist physician Dǒng Fèng 董奉 — who according to medical-folkloric tradition was the great-uncle (hào dào shì) ancestor of the Wēi family — but the SKQS editors note this as standard fāngjì divine-transmission claim. Catalog dynasty 元 is correct.