Qín Chāngyù 秦昌遇 (zì Jǐngmíng 景明, fl. late Wànlì — Chóngzhēn), Míng-period physician active in the early-to-mid 17th century. Conventionally renowned in late-Míng paediatric biographical tradition for his clinical miracles in infant medicine. Author of Yòukē zhézhōng 幼科折衷 (KR3ej018, 2 juǎn, c. 1641), Dòuzhěn zhézhōng 痘疹折衷 (separate work, not in the present hxwd recension), and Nèikē zhézhōng 內科折衷 — three works named for the zhézhōng 折衷 (eclectic balancing) editorial principle, which seeks the zhōng 中 (middle, balanced position) between cold-versus-hot and tonifying-versus-purging therapeutic schools. The works circulated principally in manuscript through the late Míng and Qīng, with limited distribution and substantial inter-witness variation. No CBDB record.