Chén Xuézhōu 陳學周, mid-Qiānlóng-era physician of Yōuxiàn 攸縣 (Húnán); the family doctor who repeatedly treated the sickly child 蔡貽績 Cài Yíjī and encouraged him to take up medical study after he qualified as dìzǐyuán 弟子員 — known only from Cài’s three prefaces to KR3eh051. No further biographical detail recoverable.