Zhōu Zhèn 周鎮, late-Qīng Mèng-hé-school physician, pupil of 王泰林 Wáng Tàilín (Wáng Xùgāo), editor-compiler of KR3eq049 Xīxī shūwū yèhuà lù 西溪書屋夜話錄 — the principal record of Wáng Xùgāo’s clinical-doctrinal teaching, including the famous Zhìgān sānshí fǎ 治肝卅法 (Thirty Methods for Treating the Liver). Zhōu’s editorial work preserves the oral-discipular pedagogy of the early Mènghé school in a form that became foundational for the late-Qīng and Republican-era Chinese internal-medicine curriculum. Not in CBDB; no further independent biographical documentation located.