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Treats wind-dampness with floating pulse and heavy body, accompanied by sweating and aversion to wind; also treats wind-water with floating pulse, where the patient has sweating only on the head, no other exterior symptoms, but coldness in the lower back and difficulty in flexion and extension; further treats numbness caused by damp-bi.

Paeleiae Radix (Fangji) (1 liang), Prepared Glycyrrhizae Radix et Rhizoma (Gancao) (half liang), Atractylodis Macrocephalae Rhizoma (Baizhu) (7 qian half), Astragali Radix (Huangqi) (1 liang 1 fen). [Note: Original text "Huang" is incomplete, supplemented as "Qi" based on formula name and context]. Chop the herbs into sizes similar to hemp seeds or beans. Each time take 5 qian bi, decoct with water, strain, and take warm. After taking the medicine, a sensation like insects crawling in the skin is felt; this indicates that the Yang Qi of the waist is being unblocked, showing the medicinal force acting on the exterior.

Fangji Fuling Decoction consists of Paeleiae Radix (Fangji), Poria (Fuling), Cinnamomi Ramulus (Guizhi), combined with Glycyrrhizae Radix et Rhizoma (Gancao) and Astragali Radix (Huangqi). A floating pulse indicates the pathogen is at the exterior; abdominal fullness and edema of the four limbs indicate water-dampness retention. The difference between Pi Shui (Skin Water) and Feng Shui (Wind Water) lies in: Pi Shui does not involve aversion to wind, and there is no sweating (due to dampness obstructing). Paeleiae Radix (Fangji) is a herb entering the interior of the Taiyang meridian; it drains the interstices, treats wind-water, and generally treats both wind-dampness and pi-shui syndromes. *Jin Gui Yao Lue* states: If there is sweating and aversion to wind, supplement with Atractylodis Macrocephalae Rhizoma (Baizhu); if water qi trembles slightly in the skin, supplement with Cinnamomi Ramulus (Guizhi). The former aims to strengthen Spleen Earth, the latter to harmonize Yang Qi; both treat exterior pathogens, differing slightly in treating root versus branch.

Regarding Yang deficiency caused by water-dampness: if sweating occurs due to dampness stagnating internally, Atractylodis Macrocephalae Rhizoma (Baizhu) is used to strengthen Spleen Earth, added with Zingiberis Rhizoma Recens (Shengjiang) and Jujubae Fructus (Dazao) to harmonize Stomach Qi; if Stomach Qi is disharmonious, add Paeoniae Radix Alba (Baishao). Regarding Yang deficiency caused by Pi Shui: because wind-water attacks the exterior and internally combines with Lung, Cinnamomi Ramulus (Guizhi) is used to release the muscle layer and scatter pathogens, while consolidating Yang Qi; Ginger and Jujube are not needed to harmonize the middle. The note under Huangqi Tang says: "After taking the medicine, one should feel like insects crawling in the skin, and the area below the waist feels like ice." This indicates sweat is excreted only from the upper part and does not reach the lower part. Therefore, Atractylodis Macrocephalae Rhizoma (Baizhu) is used to treat dampness internally, and the waist and lower body must be wrapped with blankets externally to induce sweating, thereby unblocking Yang Qi. When I treated pain in the Taiyang meridian extending from the lower back to the thighs, carefully differentiating the syndrome and using these two formulas, the effect was as immediate as striking a drum with a mallet. I record this here.

Treats Zhī Yǐn (Supporting Fluid Retention) in the diaphragm, manifesting as wheezing and chest fullness, epigastric stiffness and hardness, dark facial complexion, and a deep-tight pulse. The condition has persisted for dozens of days, and previous treatments by physicians using emetic or purgative methods were ineffective.

Stephaniae Tetrandrae Radix (Mufangji) (3 liang), Gypsum Fibrosum (Shigao) (two pieces the size of a chicken egg), Cinnamomi Ramulus (Guizhi) (2 liang), Ginseng Radix et Rhizoma (Renshen) (4 liang). Decoct with 6 sheng of water until 2 sheng remain. Take warm. Mild diarrhea after administration indicates cure.

Mu Fangji Tang treats Zhī Yǐn (Supporting Fluid Retention), characterized by coughing and wheezing requiring leaning forward to breathe, inability to lie flat, and swelling-like appearance (defined as "Zhī Yǐn"). Symptoms include wheezing, chest fullness, epigastric stiffness/hardness, and deep-tight pulse. (Zhī Yǐn is a Yin pathogen; using bitter and acrid herbs together promotes fluid movement and dissipates nodules. In areas of stiffness and hardness, latent heat must exist. After vomiting and purging, vital Qi is depleted. Thus, Gypsum Fibrosum (Shigao) is added to clear heat, and Ginseng Radix et Rhizoma (Renshen) to tonify Qi.) If the pathogen remains in the Qi level, this formula can calm it; if it involves the Blood level, further examination is required. One may remove Gypsum Fibrosum (Shigao) from the original formula and add Natrii Sulfas (Mangxiao) and Poria (Fuling). The formula for eliminating phlegm and breaking blood stasis is stronger. Physicians must carefully assess the depth and sequence of treatment. (For Zhī Yǐn in the Qi level, taking Mu Fangji Tang leads to recovery. If the fluid retention is in the Blood level, deeply involving the Lower Jiao, it may recover temporarily but recur. Because the pathogen disperses and re-aggregates, forming hard accumulations acting as nests, Gypsum Fibrosum (Shigao), a Qi-level herb, is removed. Natrii Sulfas (Mangxiao) is added to eliminate phlegm nodules and break blood stasis, combined with Poria (Fuling) to remove epigastric hardness and attack Kidney pathogenic factors. This is the method for treating the depth and sequence of Zhī Yǐn; physicians should examine it carefully.)