The one-fen area anterior to the Guan position on the right hand is called Qikou (Radial Pulse, Lung Meridian), used to observe the stagnation and emergence of Zang Qi (Visceral Qi), its merger with Wei Qi (Stomach Qi), excess or deficiency, mutual overcoming (Cheng Ke) and transmission. Because internal Zang Qi stagnates and emerges, food enters the Stomach, its refined essence spreads into the vessels, and exits from the stomach opening; thus, it is observed at Qikou. Since all five Zang organs receive Qi from the Stomach, and the Stomach is the root of the five Zang organs, Zang Qi cannot reach the Hand-Taiyin Lung meridian's Qikou point by itself, but must arrive via Wei Qi. If pathogenic Qi is strong and Wei Qi is weak, the disease becomes severe; if Wei Qi is exhausted and the True Zang pulse appears alone, death ensues.

For example, in Spring, the Liver pulse should be Xian (Wiry). If Xian is predominant and Wei Qi is scant, it indicates Liver disease; if there is only Xian without Wei Qi, it indicates death. If there is mutual overcoming, although there is Wei Qi in Spring, if a Se pulse (Choppy) appears, illness will occur in Autumn; if Se is severe, illness occurs immediately. In Summer, the Heart pulse should be Hong (Surging). If Hong is predominant and Wei Qi is scant, it indicates Heart disease; if there is only Hong without Wei Qi, it indicates death. If mutual overcoming manifests as a slightly Chen (Deep) pulse, illness will occur in Winter; if Chen is severe, illness occurs immediately. In Autumn, the Lung pulse should be Se (Choppy). If Se is predominant and Wei Qi is scant, it indicates Lung disease; if there is only Se without Wei Qi, it indicates death. If a Hong pulse appears in Autumn, it reflects Summer pathology; if Hong is severe, it reflects current pathology. In Winter, the Kidney pulse should be Chen (Deep). If Chen is predominant and Wei Qi is scant, it indicates Kidney disease; if there is only Chen without Wei Qi, it indicates death. If a Ru (Soggy) pulse appears in Winter, it reflects Changxia (Late Summer) pathology; if Ru is severe, it reflects current pathology.

In Changxia (Late Summer), the Spleen pulse should be Ru (Soggy). If Ru is predominant and Wei Qi is scant, it indicates Spleen disease; if there is only Ru without Wei Qi, it indicates death. If a Xian pulse appears in Changxia, it reflects Spring pathology; if Xian is severe, it reflects current pathology.

Furthermore, in Spring, the Liver pulse should combine Xian, Xi (Fine), and Chang (Long). If excessive, the pulse is Shi (Full) and strong, causing irritability, dizziness, vertigo, and manic disorders; if deficient, the pulse is micro-deficient, causing chest pain radiating to the back and distension in both hypochondria. In Summer, the Heart pulse should combine Hong and slightly Shi. If excessive, the pulse comes and goes vigorously, causing feverish body and painful skin, manifesting as Jin Yin (spreading sores); if deficient, the pulse does not come strongly but goes strongly, causing vexation, coughing up saliva upwards, and qi leakage downwards. In Autumn, the Lung pulse should combine Fu (Floating) and Duan Se (Short and Choppy). If excessive, the center is firm while the sides are empty, causing rebellious qi, back pain, and a feeling of oppression; if deficient, the pulse is like feathers and micro-weak, causing shortness of breath, hemoptysis upwards, and wheezing downwards. In Winter, the Kidney pulse should combine Chen and Jin Shi (Tight and Full). If excessive, it feels like bouncing stones, causing lethargy, spinal pain, shortness of breath, and reluctance to speak; if deficient, the outgoing phase resembles Shu (Rapid), causing a sensation of heart hanging like hunger, coldness in the Miao region, spinal pain, lower abdominal fullness, and abnormal urination. In Changxia, the Spleen pulse should be Chen and Ru Chang (Deep, Soggy, and Long). If excessive, it flows like water, causing inability to lift the limbs; if deficient, it is hard like a crow's beak, causing obstruction of the nine orifices, named Zhong Qiang (Heavy Rigidity). Excess and deficiency are the essentials of pulse diagnosis; when pulses are close and subtle, one must not miss the opportunity.

Moreover, the five Zang organs correspond to Wood, Fire, Earth, Metal, and Water, nourishing Hun, Shen, Yi, Po, and Zhi, generating anger, joy, thought, worry, and fear. Thus, anger causes Hun Men to relax, Wood Qi to surge, and Lung Metal to overcome it, resulting in a Xian Se pulse; joy causes Shen Ting to dissipate, Fire Qi to blaze, and Kidney Water to overcome it, resulting in a Chen San (Deep and Scattered) pulse; thought causes Yi She to be restless, Earth Qi to condense, and Liver Wood to overcome it, resulting in a Xian Ruo (Wiry and Weak) pulse; worry causes Po Hu to remain open, Metal Qi to gather turbidly, and Heart Fire to overcome it, resulting in a Hong Duan (Surging and Short) pulse; fear causes Zhi Shi to fail, Water Qi to retreat, and Spleen Earth to overcome it, resulting in a Chen Huan (Deep and Slow) pulse. This arises because the five emotions move improperly, insulting the organ they cannot overcome, failing to respect its virtue, and instead assuming superiority to attack it; the insult returns as pathogenic influence, which is what this refers to. There are five diseases, leading to twenty-five transformations. Regarding transmission and overcoming cycles, further detailed discussion is required. Thus, the Classics state: The five Zang organs receive Qi from that which generates them, transmit it to that which they overcome; Qi resides in that which they generate, and death occurs at that which overcomes them. For instance, Liver receives Qi from Heart, transmits to Spleen, resides in Kidney, and dies at Lung; Heart receives Qi from Spleen, transmits to Lung, resides in Liver, and dies at Kidney; Spleen receives Qi from Lung, transmits to Kidney, resides in Heart, and dies at Liver; Lung receives Qi from Kidney, transmits to Liver, resides in Spleen, and dies at Heart; Kidney receives Qi from Liver, transmits to Heart, resides in Lung, and dies at Spleen. From this, we know Liver dies at Lung, corresponding to Autumn, worsening on Geng days and dying on Xin days; the rest follow this pattern. Furthermore, Jia and Yi govern Yin and Mao months, Bing and Ding govern Si and Wu months, Geng and Xin govern Shen and You months, Ren and Gui govern Hai and Zi months, Wu and Ji govern Chen, Xu, Chou, and Wei months. Dividing day and night into five parts allows prediction of early or late death, representing the order of disease; however, sudden onset need not follow transmission order, or transmission may deviate from sequence due to emotional disturbances (worry, fear, anger, joy, thought) preventing sequential transmission, thereby causing severe disease. This is the essential principle of five Zang transmission; students should pay close attention.