Hé Dàoquán 何道全 (1319–1399), late-Yuán / early-Míng Quánzhēn 全真 Daoist master. Sobriquets Suíjīzǐ 隨機子 (“Master Following-Conditions”), Sōngxī dàorén 松溪道人 (“Pine-Stream Daoist Person”), Wúgòuzǐ 無垢子 (“Master Without-Stain”). DILA A000446.
Despite his Daoist affiliation, he is best known for his sānjiào héyī 三教合一 (“Three Teachings as One”) commentaries on Buddhist sūtras — including the Bōrě xīnjīng zhùjiě 般若心經註解 (X574 = KR6c0193) — alongside his Daoist works including the Suíjī yìnghuà lù 隨機應化錄 (KR5d0099, preface dated Hóngwǔ 34 / Jiànwén 3 = 1401, posthumously printed).
His syncretic methodology — citing Buddhist commentators (notably Yěfǔ Dàochuān 冶父道川, Chuānlǎo 川老), Confucian classics, and Daoist sources alongside the Heart Sūtra text — is characteristic of late-Yuán sānjiào héyī literature. He stands in the broader late-Yuán / early-Míng tradition of Quánzhēn Daoist masters (alongside Wáng Dàoyuán 王道淵 and Yáng Dàoshēng 陽道生) who developed elaborate sānjiào commentaries bridging Daoist alchemical doctrine, Buddhist scriptural learning, and Confucian moral philosophy.
He represents the most prominent Daoist contribution to the Buddhist Heart Sūtra commentary tradition, predating by some two centuries the late-Wànlì Sānyī jiào commentary of 林兆恩 (KR6c0163, KR6c0164) and the sānjiào-leaning lay commentary of 諸萬里 (KR6c0166).