何若愚 Hé Ruòyú

Hé Ruòyú 何若愚, Five-Dynasties Nán-Táng physician; author of the (lost) Zhǐwēi lùn 指微論 (3 juan) and Zhǐwēi zhēn fù 指微針賦 — the immediate doctrinal source for 閻明廣 Yán Míngguǎng’s Zǐwǔ liúzhù zhēn jīng 子午流注針經 (KR3ee045, 1153) and thus the deeper origin of the zǐwǔ liúzhù chronoacupuncture system.