Xīn-chán-sēng 心禪僧 (“the bhikṣu Xīn-chán”; secular name unrecovered), late-Qīng Buddhist scholar-physician active in the Háng-zhōu / Hú-lín 虎林 region (the colophon of his sole transmitted work dates to 1890). His KR3eq091 Yī-dé jí 一得集 (3 juǎn) combines critical-doctrinal essays — including a polemical response to Xú Dà-chūn’s “yōng-yī shā-rén wú-guò” (incompetent physicians kill without crime) formula — with case-records and prescription analyses, all framed by a Buddhist ethical conception of medical practice as Bodhisattva huó-rén (life-saving) vow. The 1890 colophon by Xú Jǐ-zhī praises him as one who shaved his head and let all things follow karma but kept his “heart-Chán wisdom-pearl” intact. No other biographical attestation located.