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Whenever entering the home of a plague patient, apply sesame oil (Sesami Oleum) inside the nostrils before entering the sickroom to avoid infection; upon exiting, one may use a paper twist to probe deep into the nasal cavity.

In one's own water vat, drop a handful of black soybeans (Sojae Semen Nigrum) every morning so that the whole family remains safe and sound.

On the Dragon Boat Festival, collect the tips of zongzi from seven families with different surnames, seven cloves of single-clove garlic, three qian of realgar (Realgar), and one qian of croton seed resin (Crotonis Fructus Resina, refined), remove the oil, grind into powder, form into small pills, using cinnabar (Cinnabaris) as the core for each pill alone, to intercept malaria attacks. Prepare Cyperi Rhizoma (Cyperi Rhizoma, soaked in vinegar and stir-fried in a copper pot) 1.5 liang and Aconiti Lateralis Radix Preparata (Aconiti Lateralis Radix Preparata, stir-fried with flour and the flour removed) 5 qian, grind into powder. Take one fen each time, and before the onset of symptoms, first take snake berry root (Rubiae Mollis Radix et Rhizoma) ground into powder, directing the action downward, or drink one to two sheng of its juice. In summer, when intending to enter water, throw a little into the middle of the stream first, and there will be nothing to fear.

On the day of Awakening of Insects, sprinkle lime (Calcii Carbonas Preparatus) on the outside of the threshold to prevent insects and ants from coming out.

On the Dragon Boat Festival, take one handful of duckweed (Lemna Minoris Herba) and one handful of poplar catkins, grind into powder. On the Qingming Festival, take turtle blood (Testudinis Carapax et Plastrum Blood) to mix these two medicines evenly, and rub them on the door frame so that mosquitoes and flies do not enter.

Stemonae Radix (Stemonae Radix), mercury (Hydrargyrum), and tea leaves (Camelliae Sinensis Folium) each one qian, and three black dates (Jujubae Fructus). Grind and mix, wrap in cloth, and carry on the body to prevent lice. Pigeon droppings (Columbae Excrementum), Polyporus (Polyporus Umbrellatus), and Datura Flower (Daturae Flos) three flowers, mix and burn to eradicate bedbugs completely.

One branch of Chinaberry tree (Meliae Cortex), smear with wine paste, hang in an open place; flies flying in cannot escape. Collecting it two or three times eliminates them entirely. (The rest is omitted.)

Borneol (Borneolum Syntheticum) five qian, Alismatis Rhizoma Preparatum (Alismatis Rhizoma Preparatum), and Acori Tatarinowii Rhizoma (Acori Tatarinowii Rhizoma) each three qian. Grind all together into powder, sprinkle between bedsheets, mattresses, and in wall corners to eliminate them. Another prescription: Mustard Seed (Sinapis Semen), Polygoni Orientalis Herba (Polygoni Orientalis Herba), and Borneol (Borneolum Syntheticum) each one qian, burn to produce smoke and fumigate to remove them immediately.

Sulfur (Sulfur) several qian, ground into powder; burn cotton seeds to produce smoke and fumigate two or three times to eliminate them.

When smallpox/rash first appears, wipe the eye sockets with rouge used by an unmarried daughter so that the rash does not enter the eyes. Once the rash is seen, take as much burdock fruit (Arctii Fructus) as needed, have the mother chew it thoroughly, and apply it to...

Place wheat stalks on the water surface; flowing water entering the pond can repel leeches.

People who are exposed to too much lacquer often suffer from lacquer gas rising and causing lacquer dermatitis; grind thirty to forty grains of Sichuan pepper (Zanthoxyli Pericarpium) and apply to the mouth and nose to avoid harm from the lacquer.