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If an ulcerated wound is accidentally contaminated with horse sweat, causing injury, the area around the wound will present with pain, purple discoloration, and swelling. One should immediately perform bloodletting (Bian Shi) at the swollen site to release dark purple blood, and apply chewed *Mume Fructus* (Wumei, 乌梅) as a topical paste for good effect. If the patient experiences irritability and fever, fearing toxin invasion into the abdomen, *Portulaca Oleracea Decoction* (Maxian Tang, 马苋汤) should be administered in doses adjusted to the patient's strength or weakness. In cases where donkey saliva enters the wound, powder from the green skin of winter melon (*Benincasa hispida*) should be applied topically.

[Note] This condition arises when toxins from horse sweat enter an unhealed ulcer, causing sudden pain, purple discoloration, and swelling around the wound edges. Immediate bloodletting (Bian Shi) at the swollen area is required to expel dark purple blood, followed by applying chewed *Mume Fructus* (Wumei, 乌梅) to the wound. If the patient suffers from restlessness and fever, indicating potential internal toxin invasion which could be fatal, one should urgently decoct *Portulaca Oleracea Herba* (Machi Xian, 马齿苋) in strong wine and have the patient drink it until intoxicated for therapeutic effect. However, since *Portulaca Oleracea Herba* (Machi Xian, 马齿苋) is cold and slippery in nature, for patients with unhealed ulcers and deficient Qi and Blood who have been exposed to this sweat toxin, the dosage must be calibrated according to physical robustness: either 1 liang or 5 qian. Furthermore, if donkey saliva enters the wound, the clinical presentation is identical to that of horse sweat toxin; one should use the green skin found under winter melon slices, dry it, grind it into powder, and apply it topically, or wash the area with a decoction. For severe toxicity, drinking *Portulaca Oleracea Herba* (Machi Xian, 马齿苋) prepared in wine yields immediate results.

Upon being bitten by a snake, immediately consume vinegar, and it is advisable to tie the affected area tightly with a rope, then administer a mixture of *Trogopterus Dung* (Wulingzhi, 五灵脂) and *Realgar* (Xionghuang, 雄黄). Once the swelling subsides and the wound heals, normalcy returns.

[Note] For snake bites, drink one to two bowls of good quality vinegar immediately to prevent pathogenic qi from spreading with the blood, and tie a rope around both ends of the injured limb. If the patient becomes comatose or lethargic, mix 5 qian of *Trogopterus Dung* (Wulingzhi, 五灵脂) and 2.5 qian of *Realgar* (Xionghuang, 雄黄), grind them into powder, mix with wine, and administer 2 qian orally. Soon after, yellow fluid will exude from the bite site; once the fluid ceases, the swelling will subside. Sprinkle *Realgar* (Xionghuang, 雄黄) powder onto the wound, which will close and heal.

For centipede bites, use a rooster. Hang the rooster upside down to collect its saliva, dip fingers in it, and smear the saliva on the wound to stop pain immediately. In severe cases, drinking fresh chicken blood is most appropriate.

[Note] For this type of injury, suspend a rooster upside down for a short time, use fingers to collect saliva from the rooster's mouth, and smear it on the wound to instantly alleviate severe pain. In severe cases, drink fresh chicken blood while warm for immediate efficacy.

For scorpion stings, urgently obtain a large snail, crush it, and apply the paste to stop pain immediately. For silkworm bites, crush *Boehmeria nivea Root* (Zhugen, 苎根), extract the juice, and apply it to the affected area for immediate recovery.

[Note] For scorpion stings, take one large snail, crush it, and apply it topically to stop pain instantly. If snails are unavailable, squeeze out the toxic fluid from the sting site and immediately apply a hot plaster to relieve pain. For silkworm bites, crushing *Boehmeria nivea Root* (Zhugen, 苎根) to extract juice and applying it leads to quick healing.