Chén Guìxīn 陳桂馨 Late-Qīng physician of Gānquán 甘泉 (Yángzhōu, Jiāngsū); preface-writer to KR3ee054 Lízhèng ànmó yàoshù (1888) in the late-Qīng Jiāngnán pediatric-medicine network around 張筱衫 Zhāng Xiǎoshān.