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Commentary states that the throat is the pathway for respiration and the route through which Qi ascends and descends; the uvula (the fleshy projection hanging from the soft palate) serves as the gate for voice production. If latent heat exists within the Zang-Fu organs, Qi attacks upward against the throat and pharynx, causing Qi and Blood to stagnate and obstruct, knotting at the uvula. The toxic heat fails to dissipate, resulting in swelling, pain, and a sensation of obstruction affecting breathing and swallowing. In severe cases, it may grow several inches long, protruding in and out with the opening and closing of the throat, making eating and breathing impossible; urgent treatment is required.

Ganjiang San (Dried Ginger Powder) for treating uvular swelling with polyp formation:
Gan Jiang (Zingiberis Rhizoma Preparatum, dried ginger prepared by cracking) 1 fen; Ban Xia (Pinelliae Rhizoma, washed seven times in hot water) 1 fen.
The above two ingredients are crushed, sifted into a powder, mixed with Yan Chi (Salted Fermented Soybeans), and applied to the affected area.

Bai Fan San (Alum Powder) for treating uvular swelling with a feeling of obstruction in the throat and elongation of the uvula:
Bai Fan (Alumen, calcined until no liquid remains) half liang; Yan Hua (Halitum, separately ground) half liang.
The above two ingredients are ground together into an extremely fine powder. Use the tip of a chopstick to apply the powder to the uvula.

Formula for treating uvular swelling with long-term polyp growth and tongue swelling:
Yang Ti Cao (Radix Salsolae Pennellianae).
The above single ingredient is boiled to extract juice for holding in the mouth, or mixed with Yan Chi and applied topically.

Another formula:
Yan (Halitum), Chi (Fermented Soybean Paste) in equal parts.
The above two ingredients are mixed with salt and applied to the affected area, three to five times daily.

Another formula:
Tong Zi Xiao Nian (Child's Urine, from a four- or five-year-old child) one he.
The above single ingredient is held in the mouth along with two copper coins.

Formula for treating uvular swelling growing several inches long, protruding with the throat, and inability to eat:
Instruct the patient to open their mouth wide. Press down the tongue with a chopstick. Heat a small cautery needle inside a bamboo tube until red-hot, then cauterize the lesion until it ruptures, which will lead to recovery. If any root remains, gradually cauterize again, then apply salt to the cauterized site.

Another formula:
Yan (Halitum).
The above single ingredient is crushed into a fine powder. Wrap it in cotton around the tip of a chopstick and apply the salt to the affected area, six to seven times daily.

Qiguan San (Opening the Gate Powder) for treating wind-heat pathogenic factors lodging and battling in the Upper Jiao, causing uvular swelling and pain:
E Shi (Arctii Fructus, burdock fruit, stir-fried) 1 liang; Gan Cao (Glycyrrhizae Radix et Rhizoma, raw) 1 liang.
The above two ingredients are crushed, sifted into a powder. Take two qian bi per dose, add one zhan of water, decoct until reduced to six fen, hold in the mouth frequently, wait for a while, then swallow.

Commentary states that Daoist practitioners taking herbal medicines must first eliminate the "Three Worms" because they harm the human body. The disease known as "Shi Yan" (Corpse Throat) also originates from this cause. Chao Yuanfang stated that the corpse worms in the abdomen ascend and erode the throat, causing sores to form, which may itch or hurt; symptoms resembling [missing text] are indicative of this condition. Those who excel in health preservation, if unable to completely remove these parasites, should still take medicine to treat them, preventing them from acting recklessly, which is beneficial.

Huangbai Tang (Phellodendron Decoction) for treating Shi Yan with throat blockage, sore formation, dry retching, headache, and difficulty swallowing:
Huang Bai (Phellodendri Cortex, scraped of rough bark and roasted) half liang; Sheng Ma (Cimicifugae Rhizoma) 1 liang; Mu Tong (Akebiae Caulis, chopped) 1 liang; Zhu Ru (Bambusae Caulis in Medulla, shredded) 3 fen; Mai Men Dong (Ophiopogonis Radix, heart removed and baked) 1.5 liang; Xuan Shen (Scrophulariae Radix) 1 liang; Qian Hu (Peucedani Radix, radicle removed) 3 fen; Da Qing (Isatidis Folium) 3 fen.
The above eight ingredients are coarsely crushed and sieved. Take three qian bi per dose, add one zhan of water, decoct until reduced to seven fen, strain, and add Mang Xiao (Natrii Sulfas, mirabilite) powder 1 qian. Stir well and take warm. If there are sores in the nose, drip a small amount of Di Huang Zhi (Rehmanniae Juice) into the nose. Take three to five times daily, regardless of timing. To promote bowel movement, add Mang Xiao; to avoid laxative effects, omit it.

Yinian Jin San (One-Pinch Gold Powder) for treating Shi Yan, Zou Ma Hou Bi (Running Horse Throat Closure), or abscesses forming inside the throat:
Xiong Huang (Realgar, ground); Li Lu (Veratri Rhizoma); Zhu Ya Zao Jia (Gleditsiae Sinensis Spina, skin and seeds removed) 1 fen each.
The above three ingredients are crushed and ground into a powder. First, take a mouthful of water, insert approximately one cun of the powder using a nasal insufflator, and draw it into the nostrils. Spit out the water immediately; relief occurs shortly after.

Shetui San (Snake Slough Powder) for treating Shi Yan throat pain:
She Tui Pi (Bombyx Batryticatus, snake slough) 1 fen; Bai Mei Rou (Semen Pruni Mume, pulp of white plum) 1 fen; Gan Cao (Glycyrrhizae Radix et Rhizoma, raw) 1 fen; E Shi (Arctii Fructus, stir-fried) half liang.
The above four ingredients are crushed and sifted into a powder. For each use, wrap one qian bi in cotton, moisten with hot water. Hold in the mouth, dissolve slowly, and swallow the saliva, without time restrictions.

Xingren San (Apricot Kernel Powder) for treating internal pain in Shi Yan throat and impending loss of voice:
Xing Ren (Semen Armeniacae Amarum, soaked in hot water, skin and tips removed, double-kernel, stir-fried and ground) 2 liang; Gui (Cinnamomi Ramulus, bark removed) 2 liang; Wu Yi Ren (Semen Trogopterori, stir-fried) 1 liang.
The above three ingredients are crushed and ground into a powder. Take one qian bi per dose, wrap in cotton, hold in the mouth, dissolve slowly, and swallow the saliva. Repeat when fully dissolved, three to five times daily.

Formula for treating Shi Yan throat pain:
Xing Ren (Semen Armeniacae Amarum, soaked in hot water, skin and tips removed, double-kernel, ground) 2 liang; Gui (Cinnamomi Ramulus, bark removed) 2 liang; Wu Yi Ren (Semen Trogopterori, stir-fried) 1 liang; Fei Shi (Semen Torreyae, peeled) half liang.
The above four ingredients are crushed and sifted into a powder. Form pills with refined honey, size of a bullet. Hold in the mouth, dissolve slowly, and swallow the saliva. Repeat when fully dissolved, two to three times daily.

Formula for treating Shi Yan throat blockage, inability to breathe, and imminent death within moments:
Tao Pi (Pruni Persicae Cortex, one handful, chopped).
The above single ingredient is decocted in one zhan of water until reduced to five fen. Strain and take warm.

Formula for treating Shi Yan throat pain and itching, resembling Gu Du (Gu Poison):
Sheng Jiang (Zingiberis Rhizoma Recens, cut into pieces the size of half a jujube).
The above single ingredient is held in the mouth, dissolved slowly, and swallowed with saliva. Continue until recovered.

Another formula:
Ma Huang (Ephedrae Herba, quantity unspecified).
The above single ingredient is wrapped in green cloth, placed in a bamboo tube, and burned. Inhale the smoke into the throat until healed.

Another formula:
Ma Zi (Semen Cannabis, hemp seed).
The above single ingredient is burned to extract oil. Mix one qian bi with wine and take orally; the illness will heal.

Another formula:
Gu Xie Bi Sheng (Rope from the toe hole of an old shoe).
The above single ingredient is burned to ash. Take one qian bi per dose, mixed with warm water.