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Chai Hu (Bupleuri Radix), Ban Xia (Pinelliae Rhizoma), Huang Qin (Scutellariae Radix), Shao Yao (Paeoniae Radix), Sheng Jiang (Zingiberis Rhizoma Recens), Da Zao (Jujubae Fructus), Zhi Shi (Aurantii Fructus Immaturus), Da Huang (Rhei Radix et Rhizoma).

When the Taiyang disease (disease pattern caused by pathogenic invasion of the Taiyang meridian) has passed its course, but has been mistakenly treated with purgatives two or three times, and after four to five days the Chai Hu syndrome (main symptom pattern of Shaoyang disease) remains, administer Xiao Chai Hu Tang (Minor Bupleurum Decoction) first. If vomiting persists, there is a sense of urgency and distress in the epigastrium, and slight irritability, administer Da Chai Hu Tang (Major Bupleurum Decoction). It is also stated: After more than ten days, if heat is consolidated internally and there is alternating chills and fever, administer Da Chai Hu Tang. In cases of severe excess and fullness, only potent purgatives can drain the accumulation; thus, Da Cheng Qi Tang (Major Order the Qi Decoction) or Xiao Cheng Qi Tang (Minor Order the Qi Decoction) should be given. However, if the condition does not reach the extent of extreme fullness and solid excess, but merely requires purging due to intense heat, then using the milder Da Chai Hu Tang is appropriate. To clear heat, bitter herbs are primary; to resolve residual pathogens, releasing the exterior is prioritized. Therefore, Chai Hu, with its bitter and neutral nature, resolves the muscle layer and serves as the Sovereign herb; Huang Qin, with its bitter and cold nature, clears heat and serves as the Minister herb; Shao Yao assists Huang Qin in dispelling heat from the Ying (Nutritive) level; Zhi Shi assists Chai Hu in dispelling heat from the Wei (Defensive) level; these serve as Assistant herbs. Ban Xia, Sheng Jiang, and Da Zao regulate the rebellion of Stomach Qi; Da Huang sweeps away accumulations and removes stagnation in the Spleen and Stomach; these serve as Envoy herbs.

Chai Hu (Bupleuri Radix), Huang Qin (Scutellariae Radix), Gan Cao (Glycyrrhizae Radix et Rhizoma), Ren Shen (Ginseng Radix), Sheng Jiang (Zingiberis Rhizoma Recens), Ban Xia (Pinelliae Rhizoma), Da Zao (Jujubae Fructus), Mang Xiao (Natrii Sulfas).

If the condition remains unresolved after thirteen days, with fullness and distension in the chest and hypochondrium accompanied by vomiting, and tidal fever (fever that worsens at a specific time each day, typically afternoon) followed by mild diarrhea, this originally belonged to the Chai Hu syndrome. It was treated with purgatives which failed to induce diarrhea, but now diarrhea occurs because pill-form purgatives were previously used, which was an incorrect treatment. Tidal fever indicates internal excess. One should first use Xiao Chai Hu Tang to resolve the exterior/Shaoyang aspect, and subsequently use this formula (Chai Hu Jia Mang Xiao Tang - Minor Bupleurum Decoction plus Natrii Sulfas). Fullness in the chest and hypochondrium, vomiting, and tidal fever indicate the pathogen is in the half-exterior, half-interior region; Xiao Chai Hu Tang is the precise indicated formula. However, since improper purgative therapy was used, the interior pathogens remain uneliminated, and Chai Hu Tang alone cannot cure it. Therefore, Mang Xiao is added to sweep away the interior excess.

Tao Ren (Persicae Semen), Da Huang (Rhei Radix et Rhizoma), Gan Cao (Glycyrrhizae Radix et Rhizoma), Gui Zhi (Cinnamomi Ramulus), Mang Xiao (Natrii Sulfas).

When Taiyang disease is not resolved, heat consolidates in the Bladder region. The patient exhibits a state resembling madness. If blood discharges spontaneously, the disease will heal. If the exterior symptoms are not yet resolved, attacking the interior with blood-invigorating agents is not yet permissible; one must first resolve the exterior. Once the exterior is resolved, if there is only urgency and binding pain in the lower abdomen, then attacking the interior is permissible, and this formula (Tao He Cheng Qi Tang - Peach Kernel Decoction to Order the Qi) is suitable. Note: Xi Jiao Di Huang Tang (Rhino Horn and Rehmannia Decoction) treats upper jiao bleeding, such as hematemesis and epistaxis. Tao He Cheng Qi Tang treats middle jiao blood stasis, such as bloody purulent stools. Di Dang Tang (Di Dang Decoction) treats lower jiao blood stasis, presenting with manic behavior. For urgency and binding pain in the lower abdomen, the sweet nature of Tao Ren is used to soften and relieve; for blood stasis in the lower jiao, the acrid nature of Gui Zhi is used to promote circulation. Because heat is intense and binds with blood, these two ingredients are added to Tiao Wei Cheng Qi Tang (Regulate the Waist and Order the Qi Decoction). Based on the symptoms, it should be Rou Gui (Cinnamomi Cortex) rather than Gui Zhi. Gui Zhi is light and ascending, treating the upper jiao; Rou Gui is heavy and descending, treating the lower jiao. This is undoubtedly an error in the text.