Chinese/Japanese Pulse Image chart: Yin Link Channel

Illustration of Yin Link Channel (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: Yin Link Channel (yin weimai) connects with the Yin collateral (yin luo) and descends along the body. Its pulse image is like a worm wriggling backwards. Illnesses related to Yin Link Channel are heart pain, melancholia, etc.