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Living male crucian carp (one, weighing approximately 4 to 5 liang), Bai Pi (Realgar, *Realgar*, six qian).
Place the powder of Realgar into the fish's abdomen. Wait until the flesh rots and is removed; do not use the Realgar. Only take the clean fish bones, dry them in the sun, and grind them into a fine powder. For each use, take a small amount, roughly the size of a rice grain, and place it on the root of the necrotic tooth, which will then fall out naturally.

Yellow blisters appear between the hands and feet, followed by a red thread-like streak that travels inward toward the heart and abdomen, causing chest tightness and mental agitation. Without urgent treatment, this is fatal. This condition is caused by qi and blood counterflow due to extreme joy or anger. Urgently use a needle to prick the area where the red streak has reached, squeezing out foul blood. Then, chew fresh *Spirodela polyrrhiza* (Duckweed) roots finely and apply the paste to the affected area for immediate recovery.

Raw *Glycyrrhizae Radix et Rhizoma Praeparatum cum Melle* (Prepared Licorice Root with Honey, two liang), Mung Bean (*Vigna radiata*, one sheng).
Decoct in water and drink; effectiveness is immediate.

Whenever one feels discomfort in the abdomen, test with raw soybeans. If no fishy smell is detected upon entering the mouth, this indicates true poisoning. Urgently decoct *Cimicifugae Rhizoma* (Black Cohosh Root) in juice, drink continuously, and induce vomiting by stimulating the throat with fingers for self-recovery. Alternatively, chew a piece of raw Alum (*Alumen*). If it tastes sweet rather than astringent, it is poison; otherwise, it is not.

Use transparent, living Magnetite (*Magnetitum*) ground raw. Mix with yellow beeswax and roll into a needle shape. Swallow with cool water. The magnetite will encase the needle, which will be excreted through the stool.

Walnut Kernel (*Juglandis Semen*, four liang), Water Chestnut (*Eleocharis tuberosa*, one jin).
Pound together to extract juice, mix with wine, and ingest. The copper coin inside the body will be expelled through the stool.

Fresh yellow goose webbing, dried in the shade, burned to ash while preserving its medicinal properties, and ground into powder. Apply to the affected area for immediate recovery.

Use high-quality Minium (*Minium*), applied to the affected area two or three times for immediate recovery.

Use aged Songluo Tea (*Usnea*, *Usnea longissima*) powder, applied to the affected area for recovery.

Raw Dog Skull Bone (scrape off all meat, expose to sunlight/fire for one day, preserve charred nature, and grind into powder), Ash of Human Nails (*Unghia Humana*), Ash of Scalded Hair (*Capillus Carbonisatus*) (two qian each), Aged Pine Rosin (*Pini Resina*) (five qian).
Grind all ingredients into an extremely fine powder and apply to the wound site. Broken bones will reconnect, and knife wounds will heal.
The above four ingredients can also be mixed in equal parts and taken with wine.

Northern Saposhnikovia Root (*Saposhnikoviae Radix*), Schizonepeta Spike (*Schizonepetae Spica*).
Decoct in water as a wash solution; wash in a wind-sheltered place.

Clean tiles from a latrine pit that have been there for many years. Grind into powder using vinegar nine times. For every one liang of powder, add five qian of *Acanthopanacis Cortex* (Five-leaf Panax Bark) and five qian of Ash of Male Hair (*Capillus Viri Carbonisatus*). Mix well with good vinegar for external application. Take one fen orally, washed down with wine. Use a bamboo sliver with the green side facing inward to press and fix the necrotic area without moving it. If the skin is broken, do not apply the powder.