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Xiebai San (Lung-Clearing Powder) consists of Sangbaipi (Morus Cortex), Digupi (Lycii Cortex), Gancao (Licorice Root), and Jingmi (Rice Grain); these four ingredients are suitable when combined. (Sangbaipi and Digupi are each used in amounts of one qian, Gancao is used in an amount of five fen, and Jingmi is used in an amount of one hundred grains. ○ Ke Qin stated: Sangbaipi clears and drains Lung fire; Digupi dissipates deficiency heat; Gancao tonifies Spleen Earth to generate Lung Metal; Jingmi harmonizes the Stomach and moistens the Lung. Li Shizhen stated: This is the standard and purest representative among formulas for treating the Lung.)

Autumn injury by dryness leads to phlegm-cough; this method is ingenious for addressing Fire Qi invading Metal (Lung).
Ji Chuzhong stated: There are three treatments for rescuing the Lung when injured by Fire-Heat damaging Qi. If it is pathogenic Heat from Cold damage insulting the Lung, Baihu Tang (White Tiger Decoction) is used to relieve irritability, which treats the branch (symptoms). If it is internal deficiency Fire scorching Lung Metal, Shengmai San (Generate Pulse Powder) is used to nourish Yin, which treats the root (cause). However, if the healthy Qi is not damaged but stagnant Fire is severe, then Xiebai San clears the Lung and regulates the Middle Jiao, treating both branch and root, thereby supplementing the deficiencies of the previous two formulas.

Treating Damp-Heat in the Stomach, manifesting as yellow urine, mouth ulcers, hematemesis (vomiting blood), or epistaxis (nosebleed).
Ganlu Yin (Sweet Dew Decoction) equally comprises Tiandong (Asparagi Radix), Maidong (Ophiopogonis Radix), Shengdi (Rehmanniae Radix), and Shudi (Prepared Rehmanniae Radix). (Tiandong, Maidong, Shengdi, Shudi.) Pipa Ye (Loquat Leaf), Huangqin (Scutellariae Radix), Zhike (Aurantii Fructus) are matched with Shihu (Dendrobii Caulis) and Ychen (Artemisiae Scopariae Herba). (Huangqin, Zhike, Pipa Ye; Shihu, Ychen.) Mixed with Gancao and decocted, they calm deficiency heat. (Equal parts decocted, taken warm.) It is precious for treating oral ulcers, gingival erosion, vomiting blood, and nosebleeds.
Chen Xiuyuan stated: The Foot-Yangming Stomach channel belongs to Dry Earth; it prefers moisture and dislikes dryness, prefers descending and dislikes ascending. Therefore, the moistening properties of Tiandong, Maidong, Shengdi, Shudi, Shihu, and Gancao are used to tonify it, while the descending properties of Pipa Ye and Zhike are used to facilitate its function. If bitter-cold herbs like Lianru (Coptidis Rhizoma) and Bohu (Phellodendri Cortex) were used, they would increase dryness; if tonifying herbs like Baizhu (Atractylodis Macrocephalae Rhizoma) were used, there would be concern about causing ascending. Even with Damp-Heat, using one portion of Huangqin to restrain heat and one portion of Ychen to leach out dampness is sufficient. Generally, treating the Yangming Stomach focuses most on "nourishing Body Fluids." The Shengdi, Shudi, Tiandong, and Maidong in this formula reflect the intention of using Ejiao (Donkey-Hide Glue) in Zuling Tang (Polyporus Decoction) to nourish Yin. The heat-restraining and damp-draining action of Ychen Hao Tang (Artemisiae Scopariae Decoction) and Huangqin reflects the intention of using Huashi (Talcum) and Zexie (Alismatis Rhizoma) in Zuling Tang to remove turbidity.

Treating Excess Fire in the Liver, manifesting as pain under the left hypochondrium, or regurgitation of sour fluid.

Treating bloody dysentery.
Zulian Wan (Evodia and Coptis Pill), also known as Zuojin Wan (Left Metal Pill), composed of Wu Zhu Yu (Evodiae Fructus) and Huanglian (Coptidis Rhizoma) in a 1:6 ratio, is used for Liver stagnation causing hypochondriac pain, acid regurgitation, and belching. (Huanglian six liang, Wu Zhu Yu one liang, soaked in salt water and stir-fried together, named Zulian Wan.) There is also a general formula for the Dysentery category; taking Xianglian Wan (Costus and Coptis Pill) brings relief. (Huanglian twenty liang, soaked overnight with ten liang of Wu Zhu Yu mixed with water, then stir-fried together; discard the Wu Zhu Yu. Add Muxiang (Aucklandiae Radix) four liang eight qian five fen. Grind both into powder, make pills with vinegar paste the size of tung tree seeds. Take two to three qian per dose, on an empty stomach with rice soup. ○ Xue Lizhai treated deficiency-type dysentery by sending down the pills with Sizijunzi Tang (Four Gentlemen Decoction), Siwu Tang (Four Substances Decoction), or Buzhong Yiqi Tang (Tonify the Middle and Augment the Qi Decoction) according to suitability.)
Chen Xiuyuan stated: Pain caused by Liver Excess can only be pacified by Lung Metal. Therefore, Huanglian is used to drain Heart Fire so that it does not overly control Metal. Moreover, the Heart is the Son of the Liver; when there is excess, we drain the Son. Wu Zhu Yu enters the Liver channel; it is bitter, acrid, and greatly hot. Its bitterness guides heat downward, following the principle of "seeking what is similar in nature"; its acridity opens stagnation and disperses nodules, following the principle that "free flow results in no pain." Why is it called Zuojin (Left Metal)? Because Liver Wood ascends from the left and must be controlled by Metal. As for Xianglian Wan, it takes the bitterness of Huanglian to drain dampness and its cold nature to clear heat, and further relies on its bitterness to firm loose stools. Additionally, it benefits from the Qi-moving and pain-relieving properties of Muxiang, which warms the Spleen and harmonizes the Stomach as an assistant herb. Thus, it can uniformly treat chronic dysentery that leans towards heat.