Pulse diagnosis chart, woodcut illustration from Cai ai bianyi (The Mugwort Gatherer's Companion), published in 1805 (10th year of the Jiaqing reign period of the Qing dynasty).
This image illustrates the system of reciprocal correspondences between the cun (Inch), guan (Pass) and chi (Foot) pulse positions on both wrists and the zang and fu viscera of the body. The cun pulse on the left wrist corresponds to the heart and Heart Envelope (baoluo); the guan pulse on the left wrist corresponds to the liver and gall bladder; and the chi pulse on the left wrist corresponds to the bladder, small intestine and kidney. The cun pulse on the right wrist corresponds to the lungs and centre of the thorax (xiongzhong); the guan pulse on the right wrist corresponds to the spleen and stomach; and the chi pulse on the right wrist corresponds to the kidney and large intestine. This method of pulse diagnosis according to the distribution of the viscera in the three sectors is based on the Neijing [Huangdi neijing, The Inner Canon of the Yellow Lord, a classic text compiled in the first or second century CE, but possibly containing material several centuries older].
