Early-Kāngxī physician of Yùtián 玉田 (Hèběi) or possibly Húběi; Xuéyuān 學淵, hào Bǐlín 筆林. Active around 1700–1715. Author of KR3eb034 Mài guàn (1711, 9 juan), a comprehensive integrating pulse synthesis. Otherwise lightly documented; no CBDB record.