Dù Qiú 杜荍 (Sòng), compiler of the Chǎnyù bǎoqìng jí 產育寶慶集 (KR3e0040); listed by 王肯堂 Wáng Kěntáng among the principal Sòng obstetrical authorities in his preface to the Nǚkē zhǔnshéng (KR3ei030).