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Cinnamon Twig (Guizhi) 3 liang, Fresh Ginger (Shengjiang) 3 liang, Licorice Root (Ganzhi) 2 liang, Jujube (Dazao) 12 pieces, Ephedrae Herba (Mahuang), Asari Radix (Xixin) each 1 liang, Aconiti Lateralis Radix Praeparata (Fuzi, prepared) 1 piece.
The above seven ingredients are decocted with 7 sheng of water. First, boil Mahuang, remove the foam on the surface, then add the remaining herbs. Decoct until 2 sheng of liquid remains. Divide into three doses and take warm. After administration, sweating should occur; when the patient feels as if insects are crawling in the skin, the disease will be cured.

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The Master said: There are diseases named Fengshui (Wind-Water), Pishui (Skin-Water), Zhengshui (Regular Water), Shishui (Stone-Water), and Huanghan (Yellow Sweat). In Fengshui, the pulse is naturally floating, and the external manifestations include joint pain and aversion to wind. In Pishui, the pulse is also floating, and the external manifestations include edema of the dorsum pedis that leaves an indentation upon pressure, aversion to wind is absent, abdominal distension resembling a drum, and absence of thirst; treatment should induce sweating. In Zhengshui, the pulse is deep and slow, and the external manifestation is spontaneous wheezing. In Shishui, the pulse is naturally deep, and the external manifestation is abdominal fullness without wheezing. In Huanghan, the pulse is deep and slow, accompanied by feverish sensation in the body, chest fullness, and edema of the four limbs and head/face; if not cured for a long time, it will inevitably lead to carbuncles and pus.
[Annotation]
Fengshui arises from internal fluid retention combined with external contraction of Wind pathogen. Wind affects the upper part first, causing facial edema, joint pain, and aversion to wind, indicating Wind pathogen in the meridians and exterior. Pishui arises from internal fluid retention combined with Dampness pathogen affecting the skin. Dampness affects the lower part first, causing edema of the dorsum pedis, abdominal distension resembling a drum, and indentation upon pressure. The fluid is within the skin layers. Since it is not caused by Wind pathogen, there is no aversion to wind; due to fluid-dampness retention, there is no thirst. Since these pathogens are all at the exterior, the pulses are all floating, and resolution should be achieved through inducing sweating and dispersing. Zhengshui refers to water pathology located in the upper body, while Shishui refers to water pathology located in the lower body. Therefore, upper location leads to chest fullness and spontaneous wheezing, while lower location leads to abdominal fullness without wheezing. Since these pathogens are all internal, the pulses are all deep and slow, and resolution should be achieved through purging downward and warming. Huanghan refers to sweat with a yellow color like nut juice. The deep and slow pulse indicates cold-fluid retention within the zang-fu organs. The feverish sensation indicates latent heat outside the meridians. Cold-fluid retention causes chest fullness and edema of the limbs and head/face. If latent heat persists and is not cured, it will inevitably lead to carbuncles and pus. From this, it can be deduced that Huanghan results from internal fluid retention and external heat steaming and stagnating in the middle, transforming according to Earth characteristics. Huanghan is classified under water diseases because it manifests as edema associated with water pathology.
[Collected Annotations]
Cheng Lin stated: Fengshui and Pishui are similar and belong to the Exterior syndrome; Zhengshui and Shishui are similar and belong to the Interior syndrome. The differences lie in Fengshui having aversion to wind while Pishui does not, and Zhengshui having spontaneous wheezing while Shishui does not!
You Yi stated: Fengshui occurs when water is constrained by Wind pathogen, leading to water disease due to Wind. Wind damages the skin and hair pores, and dampness flows into the joints, resulting in a floating pulse, aversion to wind, and joint pain. In Pishui, water circulates within the skin and internally connects with Lung Qi, so the pulse is also floating. Without concurrent Wind, there is no aversion to cold. Abdominal distension resembling a drum corresponds to the meaning in "Neijing" of being firm yet not hard. Since the disease is in the skin and does not involve the intestines or zang-fu organs, there is external distension but no internal wheezing or chest fullness. Water in the skin should be resolved via sweating, hence it is said: "Induce sweating." Zhengshui refers to excessive water in the Kidney zang. Shishui refers to water accumulation that fails to circulate. Zhengshui, taking advantage of Yang deficiency, infiltrates and reaches the Upper Jiao, resulting in a deep, slow pulse and wheezing. Shishui, due to Yin excess, knots in the Lower Abdomen, resulting in a deep pulse and abdominal fullness without wheezing. Huanghan involves sweat staining clothes yellow like nut juice, caused by the interaction of Dampness and Heat, where Dampness resides outside Heat. When pathogenic factors are abundant in the upper part and Yang fails to circulate, it causes feverish sensation, chest fullness, and edema of the limbs and head/face. Over time, it infiltrates inward, blocking Ying blood circulation, reversing into the muscle layers, and forming carbuncles and pus.

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If the pulse is floating and surging, floating indicates Wind, and surging indicates Qi disharmony. When Wind and Qi contend, if Wind is dominant, it causes hidden rashes (urticaria) and body itching; itching is called Xiefeng (Leaking Wind), which over time becomes scaly crusts or leprosy-like lesions. If Qi is dominant, it causes water qi pathology, making flexion and extension difficult. When Wind and Qi strike each other violently, general body swelling occurs, and recovery follows sweating. Aversion to wind indicates deficiency, characterizing Fengshui (Wind-Water); absence of aversion to wind, with free urination and cold in the Upper Jiao causing excessive salivation, characterizes Huanghan (Yellow Sweat).
[Commentary]
The character "Hong" (surging) in "general body swelling" should likely be "Fu" (floating). The phrase "This is Huanghan" is likely a later interpolation.
[Annotation]
When all six pulses are floating and surging, floating indicates Wind, and surging indicates Qi. In diseases of Wind-Qi contention, if Wind dominates Qi, the contention affects the Ying level, causing hidden rashes and body itching. Itching arises from deficient muscle tissue and external oppression by Wind pathogen. This is named Xiefeng, equivalent to modern wind-dryness sores; thus, prolonged cases develop scaly crusts or leprosy-like lesions (such as tinea or leprosy). If Qi dominates Wind, the contention affects the Wei level, causing water qi pathology and difficulty in flexion/extension, equivalent to modern Zhiyin (branching fluid retention) with wheezing, fullness, and inability to lie flat. If both Wind and Qi are strong and strike each other, it results in Fengshui, causing generalized edema. All the above syndromes belong to the muscle-skin exterior, so inducing sweating is appropriate, and recovery follows sweating. For Fengshui with no sweat, Yebip Tang should be used to induce sweating. If sweating occurs with aversion to wind, it indicates deficiency of Exterior Yang, so Fuzi (Prepared Aconite Root) is added. If there is no aversion to wind and urination is free, it is not Exterior Yang cold, but Upper Jiao cold. In cases of Upper Jiao cold complicated by water disease, excessive saliva production in the mouth is inevitable.
[Collected Annotations]
You Yi stated: Wind is the Qi of Heaven; Qi is the Qi of Man. Both represent a loss of harmony. In Wind-Damp contention, if Wind is strong, Qi follows Wind and infiltrates the body tissues, causing urticaria. If Qi is strong, Wind follows Qi and drives fluid accumulation, causing water retention. If both Wind and Qi are strong and contend, fluids follow, resulting in Fengshui. Sweating expels Wind and moves water, hence it is said: "Recovery follows sweating." Aversion to wind indicates Exterior deficiency. Absence of aversion to wind with free urination indicates that Upper Jiao cold fails to constrain body fluids, causing excessive salivation.

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A Chenkou (Radial artery) pulse that is deep and slippery indicates internal water qi. Swelling of the face and eyes with heat is named Fengshui (Wind-Water). Observing slight puffiness above the eyelids, resembling the appearance after waking from sleep, along with pulsation of the neck vessels, frequent coughing, and pitting edema of the hands and feet that does not rebound immediately upon pressure, confirms the diagnosis of Fengshui.
[Annotation]
This paragraph elaborates on the symptoms and pulse of Fengshui mentioned in the previous section. A deep and slippery Chenkou pulse is the diagnostic sign of internal water qi; swelling of the face and eyes is the symptomatic manifestation. A deep and slow pulse with cold indicates Shishui (Stone-Water). A deep and slippery pulse with heat is named Fengshui. Slight puffiness above the eyelids resembling a newly awakened state, prominent pulsation of the Renying (Carotid) neck vessel, frequent coughing, and non-rebounding pitting edema upon pressing the swollen extremities are all signs of Fengshui.
[Collected Annotations]
Zhao Liang stated: "Neijing" says: Deep pulse indicates water, slippery pulse indicates wind, facial swelling indicates wind, eye swelling resembling post-sleep puffiness indicates water, neck vessel pulsation with wheezing/cough indicates water. Also, Shenfeng (Kidney Wind) presents with massive facial and pedal edema, shortness of breath, and intermittent fever. Pedal edema originating from the Kidney is also named Fengshui. All these originate from "Neijing".
Cheng Lin stated: Deep reflects a downward nature, slippery reflects flowing abundance; thus, deep and slippery indicates internal water. Facial swelling indicates Wind; Wind stagnating in meridians generates heat, causing facial and pedal edema with heat, named Fengshui. "Neijing" states: All water diseases show slight swelling first appearing under the eyes. Water is Yin, and the area under the eyes is also Yin. The abdomen is the residence of Supreme Yin; thus, when water accumulates in the abdomen, the area under the eyes swells. The neck vessel is the Renying pulse. Water pathogen invading Spleen Earth causes neck vessel pulsation. The root of water is in the Kidney, and its branch is in the Lung, hence frequent coughing. Pressing the abdomen and seeing immediate rebound indicates Shuizhang (Water Distension), like pressing a water bag. However, in Fengshui contending in the extremities, where the dorsum belongs to the muscle layer, pressing disperses the fluid, which cannot gather quickly, resulting in depression without rebound.

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For Fengshui presenting with a floating pulse, heavy body, sweating, and aversion to wind, Fangji Huangqi Tang (Stephania and Astragalus Decoction) is the primary formula. Add Shaoyao (Peony Root) if abdominal pain is present.
[Annotation]
This paragraph continues the discussion on Fengshui, detailing its symptoms to clarify the treatment. Fengshui disease involves external Wind and internal Water. Floating pulse and aversion to wind indicate Wind; heavy body and edema indicate Water. Sweating indicates Exterior deficiency; therefore, Fangji Huangqi Tang is used to consolidate the Exterior and disperse Wind-Water. If abdominal pain is present, Shaoyao and Gancao (Licorice Root) are added to harmonize the Middle Jiao.