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The meridians of the Heart connect with the Small Intestine, and the meridians of the Small Intestine connect with the Heart; the meridians of the Lung connect with the Large Intestine, and the meridians of the Large Intestine connect with the Lung. This can be used to discuss pathogenesis, such as Heart transferring heat to the Small Intestine or Lung transferring heat to the Large Intestine; however, one cannot definitively assign pulse diagnosis locations based solely on this. The Small Intestine should be palpated at the Right Chi (Right Cun-Chi) position, following the principle of "Fire from Fire" (similar elements seeking each other). The Large Intestine should be palpated at the Left Chi position, following the principle of "Metal from Water." The Sanjiao (Triple Burner) belongs to Fire and is also palpated at the Right Kidney position; the Bladder belongs to Water and is also palpated at the Left Kidney position. Within a single Chi position, Water and Fire are divided; within one Zang organ region, four Fu organs are jointly associated. This is the unchangeable supreme principle of nature.

Generally, the chest belongs to Yang, and the abdomen belongs to Yin. The residues, fluids, and turbid qi transmitted by the Large Intestine, Small Intestine, Bladder, and Sanjiao all belong to Yin. These can only be situated in the abdomen, unlike the Stomach, which is the Sea of Water and Grain. Clear Qi resides above; the Gallbladder is the Official of Decision, quietly stored within the Liver, and can be located in the Middle Jiao. As for the Upper Jiao, it is shielded by multiple layers of diaphragmatic membranes, covering the clear and empty space where only the Heart and Lung reside, while the other Fu organs do not participate. This refers to what is said: "Above the diaphragm and blind area, there are the Parents." The Heart governs Blood and belongs to Yin; the Lung governs Qi and belongs to Yang. They protect the Ying and Wei (Nutritive and Defensive Qi) throughout the body; if not Parents, then who? However, the Heart Monarch governs through non-action (Wu-Wei), while the Lung acts as the Prime Minister and Imperial Canopy, covering the Heart to distribute Qi in the chest and harmonize Yin and Yang. The Danzhong (Chest Center) serves as the Envoy, enveloping and connecting below the Heart, entrusting the functions of the throat and tongue, and proclaiming decrees. Therefore, Heart Fire remains still and unmoving; when it moves, it transmits to the Pericardium, which together with the Sanjiao Fire constitutes the Ministerial Fire (Xiang Huo). The *Suwen* states that the Hand Shaoyang and the Heart Master (Pericardium) are interior-exterior partners; the *Lingshu* states that the meridian of the Hand Jueyin emerges and connects to the Pericardium Collateral, passes downward through the diaphragm, and successively connects with the Sanjiao; the meridian of the Hand Shaoyang scatters and connects to the Pericardium, merging with the Heart Master. This precisely shows that the Pericardium's Ministerial Fire and the Shaoyang's Ministerial Fire are interior-exterior partners, hence connecting successively between the upper and lower for mutual transmission. When the Heart Monarch is tranquil, the Ministerial Fire is secure, and joy emanates from the Danzhong. If the Heart Monarch is disturbed, the Ministerial Fire rises vigorously along with it, and all physiological processes deviate from their normal state. The relationship of entry and exit regarding the two Fires governed by the Pericardium is so significant that it merits a position among the Hand Meridians and can be termed a Fu organ.

Wang Shuhe, due to the connection of collaterals, placed the pulses of the Large and Small Intestines in the upper positions (Cun), failing to realize that after the transformation of water and grain, turbid and foul qi has departed, and the clear Yang Qi of the Parents (Heart and Lung) above the diaphragm is entirely distinct and does not mix. How can one, merely because of external collateral connections, claim that the clear Yang floating upward at the Right Cun position belongs to the Large Intestine? A deep pulse is described as the Lung pulse; the classic text states that the "True Zang Qi is higher than the Lung," meaning the True Zang Qi is actually higher than the Large Intestine. A floating pulse at the Left Cun is the Small Intestine pulse, while a deep pulse is the Heart pulse. Would mud in water float above a lotus flower? Is there any logic in that? The Pericardium meridian wraps around the Heart, acting on behalf of the Monarch; palpating it at the Left Cun is therefore logically consistent.