Sūn Yīkuí 孫一奎 (zì Wényuán 文垣, hào Dōngsù 東宿 and Shēngshēng zǐ 生生子, ca. 1522–1619, 明), Míng-period scholar-physician of Xiūníng 休寧 (Ānhuī). One of the most influential late-Míng physicians, with a substantial corpus including: Chìshuǐ yuánzhū 赤水元珠 (KR3e0076, 30 juan, in 70 categorical gates) — the principal Sūn Yīkuí synthetic medical treatise; Yī zhǐ xùyú 醫旨緒餘 (KR3e0077, 2 juan) — supplementary discussion-essays; Sūn Wényuán yīàn 孫文垣醫案 (KR3e0078, 5 juan) — case-records. Sūn’s medical-philosophical position is integrative-and-syncretic, drawing on the Spleen-and-Stomach school, Dānxī school, and the Mìngmén tradition with attention to differential pulse-and-symptom diagnosis. Sūn extensively consulted among the four JīnYuán masters and arrived at characteristic-balanced Míng-period syntheses. He is the principal Míng-period systematic interpreter of the JīnYuán medical revolution.