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When the Spleen and Stomach are deficient, the Qi of damp Earth flows to below the umbilicus, causing pathogenic invasion of the Kidney and Bladder. The Bladder governs cold, while the Kidney is associated with Yin Fire; when both are weak, the moistening Qi fails to circulate. The Large Intestine corresponds to Geng Metal, possesses a dry nature, and governs Jin (thin fluids); the Small Intestine corresponds to Bing Fire, possesses a hot nature, and governs Ye (thick fluids). All these organs rely on the Stomach for Qi; if the Stomach is deficient, it cannot receive Qi and becomes deficient itself, leading to a lack of fluid nourishment. Upon waking, one experiences dry mouth and throat, and the skin and hair lose luster. The Gallbladder corresponds to Jia Wood, characterized by wind and warmth, and governs the generation of Qi and Blood throughout the body; the Small Intestine corresponds to Bing Fire, characterized by heat, and governs the nurturing of Yang Qi throughout the body. They also receive Qi from the Stomach to enable floating, dispersing, ascending, and emerging functions. If the Stomach is deficient, the warm, hot, and growing Qi of the Gallbladder and Small Intestine become insufficient, stagnating within the有形 (form/blood vessels), causing Heat Diseases (Re Bing) or Wind-Stroke (Zhong Feng). These pathological changes are countless, causing stagnation in the five Zang organs represented by green, red, yellow, white, and black. The Sanjiao (Triple Burner) is the root of Yuan Qi generation in the Lower Burner; invaded by Fire, the Qi of all six Fu organs declines. Fu organs are repositories that contain and store the five Zang organs and physical substances. Moreover, the Qi of the six Fu organs has no external governance but receives internally. The Jia Gallbladder arises from Heaven's Wind Qi; the Bing Small Intestine from Summer Heat Qi; the Wu Stomach from Dampness Transformation; the Geng Large Intestine from Dryness Qi; the Ren Bladder from Cold Qi; and the Sanjiao from Tianyi Qi. These are essentially Paternal Qi, which is formless. Wind, Cold, Summer Heat, Dampness, Dryness, and Fire are alternative names for Warm, Hot, Cold, and Cool. They circulate twenty-five times in the Yang aspect, moving rightward, ascending, descending, and sinking. Their deficiency stems entirely from the weakness of the Spleen and Stomach.

Discussing from the perspective of the Five Zang organs: Excessive Heart Fire overacting on Spleen Earth is called "Heat Zhong" (Heat Center), presenting with a surging pulse and irritability. The *Nan Jing* states: In Spleen disease, there is pulsation at the umbilicus, which feels hard and painful upon pressure. This pulsation is firm and solid, resembling an accumulation or hardness, and may cause severe pain; its presence indicates Spleen deficiency disease, while its absence rules it out. Another distinguishing sign is drowsiness, mental confusion, and sleepiness after eating, indicating Spleen deficiency. Furthermore, excessive Heart Fire moves leftward into the Liver Wood sector. Wind and Dampness contend, causing whole-body pain, with a surging and wiry pulse that may occasionally be slow, or manifest as vertigo, tremors, numbness, and loss of sensation—all attributable to Wind. Spleen disease presents with heavy body and pain, classified as Painful Bi (Tong Bi), Cold Bi, various Damp Bi syndromes, flaccidity with weakness, or large abscesses and ulcers. If acrid-hot herbs are used to assist the pathogen, it transforms into Heat Disease or Wind-Stroke, with variations too numerous to recount. When Wood Qi is vigorous and circulates northward and leftward, entering the earth to assist Kidney Water, the Water, aided by the Son (Wood generates Fire, Fire generates Earth, Earth generates Metal, Metal generates Water... wait, Wood controls Earth, Earth controls Water? No, Wood generates Fire, Fire generates Earth, Earth generates Metal, Metal generates Water, Water generates Wood. Here "Zi" likely refers to the generative cycle or specific interaction context, but text says "Water gets Zi's help", implying Wood helps Water? Actually, in Five Elements, Wood generates Fire. The text says "Wood旺... enters earth to help Kidney Water". This implies a complex interaction where Wood's excess affects Water via Earth or direct control reversal. Let's stick to literal translation: Wood assists Kidney Water). Water, assisted by this, enters the Spleen to become Phlegm-Saliva, self-enters as Spittle, enters the Liver as Tears, and enters the Lung as Nasal Mucus. It clearly overacts on Liver Wood and counter-overacts on Spleen Earth. One should first tonify Yang Qi in the Yin aspect to promote its ascent, allowing it to travel along the Yang pathways to open orifices; subsequently, add Cold-Water natured herbs to drain Yin Fire, such as Huangbo (Phellodendri Cortex) and Huanglian (Coptidis Rhizome). By tonifying Yang first and draining Yin subsequently, the Spleen and Stomach become robust and return to their central position in the Middle Burner, achieving balance of Yin and Yang Qi. Fire tends to blaze upward; Water tends to moisten downward. Why does the text state that the Kidney governs the five fluids, which ascend to the head and exit through the orifices as tears, nasal discharge, sweat, saliva, and spittle? The answer is: In patients with epilepsy (Xian Bing), saliva and foam emerge from the mouth, cold sweat from the body, and clear nasal mucus from the nose. This is due to pathogenic factors from the Yang Qiao, Yin Qiao, Du Mai (Governing Vessel), and Chong Mai (Penetrating Vessel) meridians ascending. The Kidney Water cannot withstand the boiling and scorching, causing it to surge upward. This type of illness caused by odd pathogens is not constrained by the Five Elements, Yin-Yang, or the twelve regular meridians. It should be treated according to the methods for odd pathogens in the Du, Chong, two Qiao vessels, and four acupoints.

The Five Zang organs have external governance but no internal reception. This means they do not receive or hold contents, but externally govern the skin, hair, blood vessels, muscles, tendons, bones, and various orifices. If Stomach Qi becomes deficient, the Spleen has nothing to receive, and the meridians of the other four Zang organs will all become diseased. Moreover, the Spleen completely relies on the peaceful state of Stomach Earth to receive and generate Ying (Nutritive) Qi. When the four Zang organs throughout the body are prosperous, the Twelve Spirits perform their duties, the skin and hair are dense and secure, the tendons and bones are soft and flexible, the nine orifices are unobstructed, and external pathogens cannot invade.