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To wash and rinse to treat *dafeng chuang* (severe skin ulcers caused by leprosy).
Sang Ye (Mulberry Leaf), He Ye (Lotus Leaf), Dihuang Ye (Rehmannia Leaf), Zaojiao Ye (Gleditsia Sinensis Leaf), [Character missing in original text, likely a type of leaf], Cang'er Ye (Xanthium Leaf), Changpu Ye (Acorus Leaf), Heshouwu Ye (Polygonum Multiflorum Leaf).
Take equal parts of the above herbs, dry them in the sun, burn them until they retain their medicinal properties but are carbonized (*cun xing*), grind into fine powder, and use as a topical facial mask. Apply to wash hands, face, and body.

*Dafeng* (Leprosy) is a malignant disease; sores cover the body causing torment like poison, with pus dripping endlessly; eyebrows and sideburns fall out; fingers and toes ulcerate and detach; limbs suffer from stubborn numbness, pain, and itching; complexion is withered and haggard; nose collapses, eyes ulcerate, teeth loosen and fall out, lips crack and evert. The severity of this condition has no equal. Among those afflicted, not one in a hundred survives, yet they still cling to wives and children, obsess over fame and wealth, act unrighteously, and desire to continue such behavior even unto death without regret, which is deeply sorrowful. Whenever encountering this disease, one must strictly abstain from salt and all strong-flavored foods; both public duties and private affairs should be completely abandoned; avoid secular matters as much as possible, cease attending celebrations or funerals, dwell secluded in forests, and treat according to the method. This will not only cure the disease but may also lead to immortality, which is what is meant by "turning disaster into blessing."

Regarding *ban chuang* (smallpox), neither the *Huangdi Neijing* (Yellow Emperor's Inner Canon) nor Zhang Zhongjing's works record it. Searching collected formulas and theories, it seems to originate from the Wei Dynasty. There were descriptions of lesions with white heads and red roots, commonly called "peas," which is smallpox; lesions fine as millet seeds or hemp grains, commonly called "ma," are measles/rash. Larger ones are commonly called "taro" or "duckweed." These are merely different names due to varying degrees of severity. The *Baiwen* states: "Regret not using purgatives." Since rashes manifest on the exterior, purging causes toxins to sink inward. Pang Anchang stated: For body pain and high fever, slight release of the exterior is needed; if organs are closed and toxins attack, purging is necessary for recovery, requiring both sweating and purging. Chu Yushi also stated: Rashes manifesting in muscles belong to the Yangming channel; ancient treatments used Chengqi Tang to purge. These theories contradict each other, raising doubts of error, yet all are preserved here. The key is to differentiate treatment based on whether the disease has manifested or not. If just starting, symptoms resemble Taiyang syndrome with chills and fever; signs recorded include cold ears, cold sacrum, and coughing, which are rash indicators. Additionally, when children first contract it, convulsions of hands and feet resembling wind epilepsy are also signs of rash; at this stage, one should promote heat dispersion and extract toxins, necessarily using purgation. Qianjin Fang treats early-stage smallpox by decocting Dahuang (Rhubarb Root) alone for oral administration, which is explicit instruction. If already manifested, only muscle-releasing and rash-expelling methods are needed, using herbs like Shengma (Cimicifugae Rhizoma) and Zicao (Arnebiae Radix et Rhizoma). With this differentiation, conflicting theories naturally resolve. Furthermore, this disease often arises from Taiyang syndrome where sweating or purging was neglected, or due to seasonal qi fluctuations, annual guest qi influences, or epidemic diseases spreading among young and old. Treatment should follow syndrome differentiation based on etiology. Among these, *daoyan* (inward collapse of pustules) is the most critical and requires early intervention.