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The pulse at the Cun Kou (Cun Kou, radial artery location) is weak and slow. Weakness indicates insufficiency of Yang Qi (Yang Qi). Slowness indicates excess of Stomach Qi (Stomach Qi). Symptoms include belching and acid regurgitation, sudden inability to swallow food, and Qi stagnation filling the upper Diaphragm (Diaphragm).

The pulse at the Cun Kou is weak and slow. Weakness signifies insufficiency of Yang Qi. Slowness signifies excess of Stomach Qi. The so-called "excess" refers to Stomach Qi reversing upward, causing obstruction, fullness, and failure to descend; nominally called excess, it is actually an insufficiency of Stomach Yang Qi. Obstruction in the Shang Wan (Shang Wan, upper epigastrium) leads to belching and acid regurgitation. Food suddenly cannot be swallowed, and turbid Qi fills the upper Diaphragm. (Acid regurgitation occurs because Stomach Qi is obstructed, preventing Yi Mu [Liver Wood] from ascending and transforming into sourness due to stagnation.)

The pulse at the Cun Kou is weak and delayed. Weakness indicates slight Wei Qi (Wei Qi, Defensive Qi). Delay indicates Cold in Ying (Ying, Nutritive Qi). Ying belongs to Blood; when Blood is cold, fever occurs. Wei belongs to Qi; when Qi is slight, there is a sensation of hunger in the heart, accompanied by deficiency-fullness, leading to an inability to eat.

The pulse at the Cun Kou is weak and delayed. Weakness indicates slight Wei Qi. Delay indicates Cold in Ying. Ying belongs to Blood; when Blood is cold, Warm Qi leaks outward, causing fever. Wei belongs to Qi; when Qi is slight, the heart feels empty and resembles hunger. However, due to Yang deficiency and Qi stagnation, the stomach opening is obstructed and full; although hungry, one cannot eat.

The pulse at the Fu Yang (Fu Yang, dorsalis pedis artery location) is hidden and choppy. Hidden indicates vomiting and reversal, with undigested food and water. Choppy indicates that food cannot enter. This is named Guan Ge (Guan Ge, Obstruction and Reversal syndrome).

The pulse at the Fu Yang is hidden and choppy. Hidden indicates Stomach deficiency failing to transform grain, leading to vomiting and reversal. Choppy indicates Stomach Qi reversing upward, failing to accept grain, so food cannot enter. This is named Guan Ge. Undigested food and water leading to vomiting and reversal is the disease of Fan Wei (Fan Wei, Regurgitation/Reversal Stomach). Food unable to enter with choking and blockage is the disease of Ge Ye (Ge Ye, Diaphragmatic Dysphagia). The hidden pulse represents stagnant Stomach Qi, with Yang Qi declining below, thus failing to transform grain. The choppy pulse represents condensed and rough Stomach Qi, with Yin filling above, thus failing to accept food.

The pulse at the Cun Kou is floating and large. Floating indicates deficiency; Large indicates excess. If this appears at the Chi (Chi, distal radial pulse position), it is Guan (Guan, Obstruction); if at the Cun (Cun, proximal radial pulse position), it is Ge (Ge, Reversal). Guan results in inability to urinate; Ge results in vomiting and reversal.

The pulse at the Cun Kou is floating and large. Floating indicates deficiency; Large indicates excess. When both deficiency and excess are present, Qi in the body becomes clear and empty when excessive, and obstructed when deficient. This is what Zi Hua Zi said: "Excess manifests as deficiency, deficiency manifests as excess." Generally, when Yin is balanced and Yang is dense, Yang intersects with Yin without showing floating or large characteristics. When Yin is excessive and Yang is deficient, Yang leaks outward, showing floating and large characteristics. The floating aspect indicates internal deficiency of Yang; the large aspect indicates external excess of Yang. If this pulse is at the Chi position, Yang Qi sinks downward, forming Guan. If at the Cun position, Yin Qi reverses upward, forming Ge. Guan means Yin obstructs below, Qing Qi (Clear Qi) sinks and stagnates without ascending. Once Liver Wood sinks, its command of Shu Xie (Shu Xie, dispersing and draining) cannot act, resulting in inability to urinate. Ge means Yang floats above, Turbid Yin rushes and blocks without descending. Since Stomach Earth has reversed, its official function of receiving and storing fails, resulting in vomiting and reversal. The *Ling Shu: Mai Du* states: "When Yin Qi is too excessive, Yang Qi cannot nourish," hence Guan. "When Yang Qi is too excessive, Yin Qi cannot nourish," hence Ge. Because Yang Qi descends to transform Turbid Yin, and Yin Qi ascends to transform Clear Qi: Clear Qi ascending ensures smooth water passage without retention; Turbid Yin descending ensures food intake without vomiting. Excessive Yin below causes Yang to sink and fail to ascend, so Liver Qi sinks downward and water does not flow. Excessive Yang above, due to Yin reversing and failing to descend, causes Stomach Qi to stagnate upward and food to fail to go down.