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The pulse in spring is wiry (Xian). The pulse in summer is hook-like (Gou). The pulse in autumn is feathery (Mao, i.e., floating). The pulse in winter is stone-like (Shi, i.e., deep). Are these the pulses of flourishing seasons or disease? It is said: Wiry, hook-like, feathery, and stone-like are the pulses corresponding to the four seasons.

The left Cun position, externally, observes the Heart; internally, it observes the Danzhong (Pericardium area). The right Cun position, externally, observes the Lung; internally, it observes the chest cavity.
The left Guan position, externally, observes the Liver; internally, it observes the diaphragm area. The right Guan position, externally, observes the Spleen; internally, it observes the stomach region.
The left Chi position, externally, observes the Kidney; internally, it observes the abdominal cavity. The right Chi position, externally, observes the Pericardium; internally, it observes the waist.

Human vessels are the tunnels through which Qi and Blood flow. Without the driving force of Qi, they cannot move. Thus, Blood constitutes the vessel, and Qi constitutes the respiration/rhythm. The terms "Mai" (Vessel) and "Xi" (Respiration/Rhythm) are distinguished from this.

The point one fen anterior to the Guan position on the right hand is called the Qikou (Cunkou), used to observe Qi stagnation and eruption, as well as the presence of Stomach Qi, to determine if excess or deficiency leads to overacting (Cheng) or insulting (Ke) transmission. If internal Qi stagnates and erupts, and food Qi enters the Stomach... leading to the Liver pulse... illness will inevitably occur. If there is Liver disease in spring and Spleen disease in summer, with pain in both hypochondria, resembling a bird pecking... Metal of the Lung overacts upon it, and the pulse must be wiry and choppy. Due to excessive joy, the Spirit scatters and dissipates, Fire Qi becomes intense, and Water of the Kidney overacts upon it, making the pulse necessarily deep... Earth Qi condenses, and Wood of the Liver overacts upon it, making the pulse necessarily wiry and weak. Due to excessive worry, the Po gate fails to close, Metal Qi becomes stagnant and gathers, Heart Fire... causing the Zhi chamber to fail to proceed, Water Qi retreats cyclically, and Earth of the Spleen overacts upon it, making the pulse necessarily deep and slow. This is because the Five Emotions (Joy, Anger, Worry, Fear, Thought) act improperly, mistakenly believing they can overcome others, but instead suffering from pathogenic reversal. This is what is meant. There are five diseases, resulting in twenty-five variations. These should be discussed in detail. Therefore, the Classics state: The Five Zang organs receive Qi from that which they generate (Sheng), and transmit it to that which they overcome (Ke). Qi stays in... For example, the Liver receives Qi from the Heart, transmits it to the Spleen, Qi stays in the Kidney, and death occurs when it reaches the Lung. The Heart receives Qi from the Spleen, transmits it to... The Spleen receives Qi from the Lung, transmits it to the Kidney, Qi stays in the Heart, and death occurs when it reaches the Liver. The Lung receives Qi from the Kidney, transmits it to... The Kidney receives Qi from the Liver, transmits it to the Heart, Qi stays in the Lung, and death occurs when it reaches the Spleen. From this, we know that Liver dies due to Lung, observed here. Furthermore, Jia and Yi days correspond to Yin and Mao hours; Bing and Ding days correspond to Si and Wu hours; Geng and Xin days correspond to Shen and You hours; Ren and Gui days correspond to Hai and Zi hours. In the night's five divisions, one can predict the early or late time of death. This is the sequence of disease transmission. However, sudden onset cases need not be treated according to this sequence, as emotions like worry, fear, anger, joy, and thought prevent the disease from following this order, thereby causing severe illness in humans. This is the general principle of the transmission and variation of the Five Zang organs.