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The reason why the heavenly warmth warms the stomach and chest is that Kidney Yang (Shen Yang) acts as the fire fueling the bottom of the cauldron. The reason why post-heaven Qi (Hou Tian Zhi Qi) steams upward and covers downward is that Stomach Yang (Wei Yang) acts as the radiating light. Since this type of Lin syndrome (dysuria with pain) is caused by deficiency-cold in the upper jiao and cold in the middle jiao, Aconite Radix Preparata (Fuzi), which is pungent and salty and enters the Kidney, is used to gather heat into the lower jiao. This supports Kidney Yang, thereby creating the condition for warming the stomach and chest. Similarly, regarding the treatment of tension and urgency in the lower abdomen, the root cause lies here. Yam Rhizome (Shuyu), which is sweet, warm, and enters the Stomach, is used to draw heat up to the middle jiao. This warms Stomach Yang, thereby providing the basis for steaming upward and covering downward. Similarly, regarding the treatment of pain radiating from the umbilicus, the root cause also lies here. When Kidney Yang recovers, pre-heaven Qi (Xian Tian Zhi Qi) steams upward from the Jiaji points (BL12-BL23). When Stomach Yang recovers, post-heaven Qi transports upward via the Spleen and Lungs and stores there. Consequently, the divine Qi (Shen Qi) in the upper jiao becomes naturally abundant, with strong control and orderly distribution. In such a case, how could deficiency-type Lin syndrome fail to heal? Moreover, using the draining and leaching properties of Dioscorea (Shuyu) and Poria (Fuling) removes water to benefit urination; using Trichosanthes Fruit (Gualou) to generate fluids stops thirst and prevents water accumulation. Administered as small pills to be swallowed, the intention is for the medicine to transform in the lower jiao, warming the middle from below, and subsequently warming the upper from the middle. Starting with three pills and gradually increasing the dose avoids overwhelming patients with deficiency-cold with sudden intense warmth, which might exacerbate false heat in the Bladder. The indication "urine flows freely and the abdomen feels warm" signifies efficacy, revealing that the therapeutic intent focuses on the middle and lower jiao.

Article 12: For difficulty in urination, Putu San (Cattail Pollen Powder) is the primary formula. Huashi Baiyu San (Talcum and White Fish Powder) and Fuling Rongyan Tang (Poria and Military Salt Decoction) are also indicated.

Putu San Formula: Cattail Pollen (7 parts), Talcum (3 parts).
Grind the above two ingredients into powder. Take one fangcun bi (approx. 2-3 grams) with water, three times daily.

Huashi Baiyu San Formula: Talcum (2 parts), White Fish (2 parts), Human Hair (2 parts, burned to ash).
Grind the above three ingredients into powder. Take half a qian bi (approx. 1 gram) with water, three times daily.

Fuling Rongyan Tang Formula: Poria (half jin), Military Salt (one piece the size of a bullet), Atractylodes Macrocephala Rhizome (Bai Zhu, 2 liang).
Decoct the above three ingredients in six sheng of water until three sheng remain. Divide into three warm doses.

This illustrates the treatment of turbid Lin syndrome caused by the stagnation of licentious fire. The text states that when the disease is named Lin and accompanied by difficulty in urination, there is another scenario where desire-fire flows into both Kidneys but cannot be discharged through sexual activity. Consequently, the Kidney collaterals are penetrated by fire qi, leading to swelling, heaviness, and obstruction. The Bladder is the Fu organ of the Kidney; when Kidney heat transfers to it, urination becomes difficult. Kidney essence moves internally but cannot descend, transmitting its essence to the Bladder, where it gradually transforms into white turbidity (bai yin) flowing downward, resulting in Lin and turbid urine. However, if this fire does not dissipate, causing gradual corruption over years, the turbidity will never cease. Cattail grass grows in water and possesses a generating nature to vent water qi; it reaches directly to the Kidney house to drain fire. Furthermore, since this fire originates from the Shao Yin Heart Master, burning it to ash yields a black color and salty taste. Black enters the Kidney, and saltiness drains the heart fire lodged in the Kidney. Paired with sweet-cold Talcum, which separates and promotes urination, the pathogen descends directly through the urinary pathway. Hence, this formula is indicated. If this condition persists due to mismanagement, yin essence and blood are damaged by internal blazing evil fire and depleted by downward discharge of Lin turbidity. Therefore, moistening dryness and expelling stasis become indispensable. Thus, Huashi Baiyu San is indicated. Talcum is sweet and cold to drain evil fire and promote urination. The white fish is flat, narrow, and long-tailed, making it the most agile at stirring water among fish. Used in the powder, it aims to guide Talcum quickly to the Kidney and utilize its water-partitioning power to benefit urination. Hair is the surplus of blood; it is taken for its ability to moisten dryness. Broken hair is the surplus of stale blood; it is taken for its property to expel stasis. Burned to ash, it becomes bitter and salty, capable of defeating heart fire flowing down to the Kidney region, similar to the function of Cattail Pollen Ash. Regarding Lin turbidity causing difficulty in urination, leading to fluid retention and water accumulation, the harm of fluid retention is more urgent than that of Lin syndrome itself. Therefore, bland-leaching Poria is used as the chief herb, and earth-drying Atractylodes Macrocephala Rhizome as the assistant. First, urination is promoted to remove water. Adding saltiness to moisten and descend, along with Military Salt (Rong Yan) to drain heart fire and treat Lin, allows both Lin syndrome and difficulty in urination to resolve simultaneously. Moreover, the Kidney is a Zang organ, and Zang organs have no draining method. Draining the Fu organ through promoting urination is effectively draining the Zang organ. Thus, Poria and Atractylodes are not necessarily ineffective for treating Lin. The phrase "both are indicated" implies that these are all main formulas for turbid Lin, but their specific applications differ according to the pattern.

Article 13: For thirst with desire to drink water, accompanied by dry mouth and tongue, Baihu Jia Renshen Tang (White Tiger Plus Ginseng Decoction) is indicated. (Formula seen elsewhere.)

This article should ideally be prefixed with "Lin syndrome presents with difficulty in urination." Otherwise, it would not belong at the end of the Lin syndrome section. Generally, extreme heat in the chest fills the middle and lower jiao, obstructing qi mechanism, thus causing difficulty in urination. Additionally, extreme heat in the chest forces true yin to descend, causing Lin syndrome. Baihu Tang is a formula like autumn wind dispersing heat; adding Ginseng makes it a liquid gold that moistens dryness, as detailed in the commentary on the original Baihu Tang in Shanghan Lun. By resolving heat in the diaphragm, true qi can expand and relax, allowing urination to flow freely. Once heat in the diaphragm resolves, true yin can nourish upward, eliminating both thirst and Lin syndrome. This is a case where heat causes difficulty in urination, and difficulty in urination leads to increased heat and Lin syndrome. Therefore, beyond resolving heat, Lin syndrome and difficulty in urination will heal spontaneously without direct targeting.

Article 14: For floating pulse, fever, thirst with desire to drink water, and difficulty in urination, Zhuling Tang (Polyporus Decoction) is indicated.

Zhuling Tang Formula: Polyporus (Zhu Ling, peeled), Poria (Fu Ling), Alisma Rhizome (Ze Xie), Talcum (Hua Shi), Donkey-hide Gelatin (E Jiao) (each 1 liang).
Decoct the first four ingredients in four sheng of water until two sheng remain. Strain, then dissolve E Jiao in the decoction. Take seven he of the warm solution.

This article should also be prefixed with "Lin syndrome," consistent with the previous article. A floating pulse and fever seem to indicate exterior syndrome; thirst with desire to drink seems to indicate interior syndrome. However, given the presence of Lin syndrome and difficulty in urination, it is known that thirst arises from internal heat due to water accumulation scalding the diaphragm, and the floating heat results from internal steam of hot water pushing outward. The primary action of this formula relies on heavy use of Polyporus, Poria, and Alisma to promote urination. Talcum, being heavy, sweet, and cold, is added to subdue floating heat. Donkey-hide Gelatin, which nourishes yin and tonifies blood, is added to stop thirst and drinking. This article describes a situation where difficulty in urination leads to upper thirst, external heat, and lower Lin syndrome. Besides promoting urination, stopping heat-thirst ensures that Lin syndrome heals spontaneously. Both articles illustrate the treatment of heat-type Lin syndrome.