Anonymous Qīng-era physician (probably late 18th to 19th c.) whose only documented work is the KR3er100 Yīxué shuōyuē 醫學說約, a one-juǎn clinical handbook signed with the hào Qiūtián sǎnrén 秋田散人 (“Recluse of the Autumn Fields”). The author’s self-preface identifies him as a third-generation physician: his great-grandfather Qīngshā gōng 青莎公 had practised medicine; his father had continued the family tradition; the author himself was originally trained in the classical examination track before turning to medicine, and studied at the household of the Yǔrén Wúshì 羽仁吳氏 lineage of medicine under a master Wú (whose nephew Wú Yǔnchéng 吳允成 was the senior fellow-disciple). The work’s clinical-doctrinal position is a distinctively spleen-centric anti-Zhū-Dān-xī polemic; the work was preserved only through a Japanese-imprint repatriation through the hxwd series. Real-name identification not located.