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Credit
Chinese/Japanese Pulse Image chart: Fine Pulse (ximai). Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.
Illustration of Fine Pulse (ximai) from Renyuan maiying guizhi tushuo (Pictorial Handbook of Pulse Images Based on the Person). This is a specialist text on pulse diagnosis attributed to the third-century master Shuhe, edited and revised by Shen Jifen in the Ming period (1368-1644). It discusses various pulse images and the medical conditions to which they relate, and contains 48 pulse image diagrams. This undated edition was engraved and published in Japan.
The text states: With regard to the pulse image of Fine Pulse, when one seeks it with the fingers, it feels as fine as a thread, extremely slight. Fine Pulse relates to accumulations, damp damage (shang shi); diarrhoea; fullness in the abdomen (fuman); combined deficiency of Qi and blood, etc.