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Commentary states: The *Huangdi Neijing* (Yellow Emperor's Inner Canon) mentions that for bi syndrome manifesting with heat, it is due to an excess of Yang qi and a deficiency of Yin qi. When Yang encounters Yin obstruction, it results in Heat Bi. This occurs because internal organs are congested with heat, and upon encountering the three pathogenic factors of Wind, Cold, and Dampness, these pathogens lodge and struggle within the meridians, remaining stagnant without flowing. As Yang encounters this Yin obstruction, Bi syndrome manifests with a sensation of stifling heat.

To treat Heat Bi, characterized by extreme heat in the muscles, a sensation on the body like mice running, necrosis and reversal of the lips and mouth, and changes in skin color. It is also indicated for various wind diseases. Formula for Shinan San (Stone South Powder):

Shinan Ye (Leaves of *Acanthopanax sessiliflorus*, sprinkled with vinegar and lightly stir-fried), 1 liang; Shanyu (Tuber of *Dioscorea opposita*), 1 liang; Huangqin (Radix *Scutellariae*, cut into pieces), 3 fen; Tianxiong (Radix *Aconiti Kusnezoffii*, processed until cracked, peel and umbilicus removed), 1 liang; Shanzhuyu (Fructus *Corni*), 1.5 liang; Taohua (Flos *Persicae*, used raw); Juhua (Flos *Chrysanthemi*, unopened flowers, stir-fried), each 3 fen; Zhenzhu (Margarita, ground separately), 1 fen; Shigao (Gypsum Fibrosum, ground separately); Shengma (Rhizoma *Cimicifugae*), 1 liang; Gancao (Radix *Glycyrrhizae*, honey-fried, cut into pieces), 3 fen; Weirui (Rhizoma *Polygonati Odorati*, cut into pieces), 1 liang; Dansha (Cinnabaris, 1 qian, ground separately, then mixed with Zhenzhu and Shigao powders and ground together until extremely fine).

The above thirteen ingredients: except for those requiring separate grinding, grind the other ten ingredients into powder using a mortar and sieve. Then mix in the previously ground ingredients evenly. Take 1 qianbi per dose, dissolved in warm wine on an empty stomach. Administer twice daily and once at night, gradually increasing the dose to 2 qianbi.

For treating Heat Bi. Formula for Shengma Tang (Cimicifuga Decoction):

Shengma (Rhizoma *Cimicifugae*); Shegan (Rhizoma *Belamcandae*); Gancao (Radix *Glycyrrhizae*, honey-fried, cut into pieces); Xiong (Rhizoma *Chuanxiong*); Renshen (Radix *Ginseng*), each 2 liang; Chixiaodou (Semina *Phaseoli Angularis*, stir-fried), 3 he; Shengjiang (Rhizoma *Zingiberis Recens*, sliced thinly, dried); Maimendong (Radix *Ophiopogonis*, core removed, dried); Weirui (Rhizoma *Polygonati Odorati*), each 3 liang.

The above nine ingredients: coarsely crush and sieve. Take 4 qianbi per dose. Add 2 zhan of water, 0.5 he of juice from Shengdihuang (Radix *Rehmanniae Recens*), and 15 leaves of Qingzhuyezi (Young leaves of *Bambusa*). Decoct together until 1.5 zhan remains. Strain and take warm, at any time.

For treating Heat Bi. Formula for Fangfeng Wan (Saposhnikovia Pill):

Fangfeng (Radix *Saposhnikoviae*, remove forked roots); Qianghuo (Rhizoma *Notopterygii*, remove rhizome head); Fushen (Poria cum Radix Pinus, remove wood); Niuxi (Radix *Achyranthis Bidentatae*, soaked in wine, sliced, dried); Gui (Cortex *Cinnamomi*, remove rough bark); Renshen (Radix *Ginseng*); Zhike (Fructus *Aurantii Immaturus*, remove pulp, stir-fried with bran); Wujia Pi (Cortex *Acanthopanacis Gracilistylis*, cut into pieces); Shaoyao (Radix *Paeoniae Alba* or *Rubra*); Danshen (Radix et Rhizoma *Salviae Miltiorrhizae*); Yiyiren (Semen *Coicis*); Xuanshen (Radix *Scrophulariae*); Maimendong (Radix *Ophiopogonis*, core removed, dried); Sheng Dihuang (Radix *Rehmanniae Praeparata*, dried); Ci Shi (Magnetitum, calcined and quenched in vinegar four times), 4 liang; Binglang (Semen *Arecae*, cut into pieces), 2 liang; Songziren (Semen *Pinii*; Dahuang (Radix et Rhizoma *Rhei*, cut into pieces, stir-fried); Muxiang (Radix *Aucklandiae*), each 0.5 liang.

The above nineteen ingredients: grind into powder. Mix with refined honey to form pills the size of *Koelreuteria* seeds. Take 30 pills per dose with warm wine, gradually increasing to 40 pills. Take on an empty stomach or before meals.

For treating Heat Bi. Formula for Shengma Tang (Cimicifuga Decoction):

Shengma (Rhizoma *Cimicifugae*), 3 liang; Fushen (Poria cum Radix Pinus, remove wood); Renshen (Radix *Ginseng*); Fangfeng (Radix *Saposhnikoviae*, remove forked roots); Xijiao (Cornu *Rhinocerotis*, shaved into slices); Lingyangjiao (Cornu *Saigae Tataricae*, shaved into slices); Qianghuo (Rhizoma *Notopterygii*, remove rhizome head). [Note: Text lists "above eight ingredients" but only lists seven explicitly named plus implied grouping, assuming standard composition context].

The above eight ingredients: coarsely crush and sieve. Take 4 qianbi per dose. Add 1.5 zhan of water, one piece of Shengjiang (Rhizoma *Zingiberis Recens*, smashed), and a small amount of Zhuli (Bamboo Sap). Decoct together to obtain 1 zhan. Strain and take warm, at any time.

For treating Heat Bi. It is suitable to take Formula for Shengdihuang Tang (Rehmannia Decoction):

Shengdihuang (Radix *Rehmanniae Recens*, crushed to extract juice); Zhuli (Bamboo Sap); Jingli (Juice of *Artemisia argyi* stems); Qianghuo (Rhizoma *Notopterygii*, remove rhizome head); Fangfeng (Radix *Saposhnikoviae*, remove forked roots), each 3 liang; Fuzi (Radix *Aconiti Lateralis Preparata*), 1 piece.

The above six ingredients: except for the first three, cut the remaining three into pieces the size of hemp seeds. Take 3 qianbi per dose. Add 1.5 zhan of water, and small amounts of Shengdihuang juice, Zhuli, and Jingli. Decoct for a few boils. Strain to obtain 1 zhan. Take warm, at any time.