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Wu Youke used Bing Shao Tang (Betel Nut and Peony Decoction), which is a formula for treating interior syndromes of plague accompanied by dysentery. If exterior symptoms are present, the exterior should still be resolved first. One must follow Yu Jiayan's method of three-stage treatment to fully address the variations in the disease. In cases where both exterior and interior are affected, they should be treated separately; the general principle is flexibility and adaptation, avoiding rigid adherence. Only Song Hua San (Pine Flower Powder) shows remarkable efficacy in treating heat-dysentery caused by plague-toxin, and it should not be neglected due to its simplicity. Furthermore, regarding pus and blood in stool as described in Shanghan Lun (Treatise on Cold Damage), some cases result from erroneous sweating therapy applied to patients with strangury, treated with Zhu Ling Tang (Polyporus Decoction); others involve the Shaoyin (Lesser Yin) channel, treated with Tao Hua Tang (Peach Kernel Decoction). These approaches are generally unsuitable for plague-induced dysentery. This is because dysentery arising from plague is consistently characterized by heat throughout its course. However, ordinary epidemic dysentery lacks the typical plague symptoms such as headache, fever, aversion to cold, spontaneous sweating, epigastric and abdominal fullness, anorexia, and delirium. In situations where an entire household suffers only from dysentery, there are distinctions between deficiency and excess, cold and heat patterns, and thus the treatment methods vary accordingly. Dysentery accompanied by fever and a large pulse is difficult to treat, whereas fever with a small pulse is easier to treat.

Song Hua San (Pine Flower Powder): Treats heat-dysentery caused by plague-toxin.
Song Hua (Pine Pollen) (2-3 qian)
Brew fresh mint leaves with boiling water, add honey, and take orally until cured. It is invariably effective. Method for collecting pine pollen: In early April, observe the yellow spikes emerging from the pine tips that resemble wheat ears. Pick them while they are still firm, spread them on a cotton sheet, and dry them in the sun until powder falls off resembling Puhuang (Sparganium Spore). Store in porcelain vessels; during the dog days of summer, sun-dry again to prevent insect infestation. Do not collect too early, as the spikes will be tender and yield less yellow powder; do not collect too late, as the florets will disperse leaving empty husks. Collect when the spikes are firm, yellowish, and the size of rice grains. Additionally, mixing pine pollen with rice flour and white sugar allows for steaming cakes, known as Song Hua Bing (Pine Flower Cake), which is very fragrant and delicious.

Da Huang Jiu (Rhubarb Wine): Treats pus and blood in stool, tenesmus, abdominal pain, and incessant restlessness day and night.
Da Huang (Rhei Radix et Rhizoma) (5 qian), soaked overnight in 1 liang of good yellow wine. Drink warm the next day.

Malaria typically presents with periodic chills and fever, while the pulse remains calm and the body cool at other times; this is normal and should be treated according to malaria protocols. If the pathogen transmits to the Stomach, interior syndromes will manifest (symptoms requiring purgation), termed Wen Nue (Plague Malaria). Treating this as ordinary malaria leads to death; it must be treated according to plague protocols. After purgation, if the interior syndrome resolves but chills and fever persist, it indicates that the plague pathogen has diminished while the malaria pathogen remains. For persistent malaria pathogen, use a dispersing method with Qing Pi Yin (Clear Spleen Decoction). If the pathogen is gone but the malaria trend continues, use a blocking method with Bu Er Yin (Not Two Decoction). If the trend persists accompanied by deficiency, use a tonifying method with Si Jun Zi Tang (Four Gentlemen Decoction). These three formulas are found in the Malaria section and are not reproduced here.

Dan Hao San (Cinnabar and Artemisia Decoction): Treats intractable plague malaria.
Huang Dan (Lead Oxide) (5 qian, stir-fried), Qing Hao (Artemisiae Annuae Herba) (steeped in child's urine, dried, 2 liang, powdered).
Take 2 qian per dose. Take with wine if chills predominate, or with tea if heat predominates.

He Ling Zao (Crane-Age Date): Treats plague-related malignant malaria. Take one red date, recite the incantation "Hua Biao Zhu" (Flower Pillar Post) seven times in one breath, inhale qi from the northwest direction, blow onto the date, and have the patient consume it.

Bian Mi Yin (Urine and Honey Drink): Treats miasma-induced various malarias, regardless of whether new or chronic.
Tong Bian (Child's Urine) (1 zhong), Bai Mi (White Honey) (2 chi).
Stir together, remove white foam, and take in one dose to induce vomiting. The emergence of emerald-green phlegm is ideal; otherwise, the condition will not be thoroughly eradicated.