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Credit
Chinese/Japanese Pulse Image chart: Penetrating Vessel. Wellcome Collection. Attribution 4.0 International (CC BY 4.0). Source: Wellcome Collection.
Illustration of Penetrating Vessel (pulse) 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: Penetrating Vessel (chongmai) originates in the Middle Burner (zhongjiao) and connects with the Leg Yangming channel. Illnesses related to Penetrating Vessel are involuntary seminal emission; yellow, swollen limbs, etc.