用荐茭草一大把，须是夫妻床上旧者，锉作短段，置在旧大酒瓶内，用火烧之，以患脚
在瓶
治风湿香港脚，气血凝滞，皮肤粗涩，不自润泽。
荆芥穗（四两） 苦参 地骨皮 白牵牛 赤小豆（以上四味各三两） 白蒺藜（炒去
刺） 防风
各二两） 木鳖子
萸（汤洗七次。以上三味
上件为细末，每用半两，水四碗，入连根葱白五茎，擘开同煎至五、七沸，倾出，入朴
硝末
淋渫香港脚。
大戟 川乌头（炮，去皮脐） 顽荆叶 草乌头（生，去皮尖） 石南叶 本（去土，
焙） 杜
上件各等分， 咀。每用一两半，水五升煎三、五沸，乘热熏洗、淋渫，拭干。勿令见
风。
治经络寒湿，腿臂作痛，屈伸不能。此药舒筋止痛，散风去湿。
晚蚕砂（微炒，一升） 蛇床子（炒，一升） 肉桂（去粗皮） 荆芥穗 干荷叶（以
上三味各三
上件 咀。药二两，水五升，入葱、椒同煎，去滓淋渫。
治遍身麻木，腰脚疼痛，筋急骨疼。
天仙子 草乌头（生，去皮尖） 蛇床子 牡蛎（ ） 干姜（炮。以上五味各三两）
上件 咀。平分作两次，每用水五升，煎五、七沸，去滓淋渫，以被盖之，汗出是验。
治寒湿香港脚，淋渫立效。
金毛狗脊（去毛） 吴茱萸（生用） 山茱萸（生用） 木鳖子（去壳。四味各一两）
上件 咀，分作四次用。每用水五碗，煎数沸，乘热先熏，后去滓淋渫。
[Fumigation Method for Hong Kong Foot]
Take a large handful of *Jiao* grass (reed-like grass), preferably old grass from the marital bed, cut it into short segments, place it in an old large wine bottle, burn it with fire, and position the affected foot above the bottle opening to fumigate.
Indications: Rheumatic Hong Kong foot (a condition characterized by swelling, pain, and numbness in the feet), stagnation of Qi and blood, rough and dry skin lacking moisture and luster.
Ingredients: Jingjie Sui (Schizonepetae Spica, 4 liang), Kushen (Sophorae Flavescentis Radix), Digupi (Lycii Cortex), Baiqianniu (Pharbitidis Semen), Chixiaodou (Phaseoli Semen Rubrum) (each of the above four herbs, 3 liang); Bijieli (Tribuli Fructus) (stir-fried and thorns removed), Fangfeng (Saposhnikoviae Radix) (each, 2 liang); Muguezi (Momordicae Semen), Shuyu (Corni Fructus) (washed seven times with decoction). The above three herbs [Note: Textual ambiguity in source regarding specific grouping, extracted as listed]... Grind all ingredients into a fine powder. For each use, take 0.5 liang, add four bowls of water, insert five stalks of scallion white (with roots intact), break them open, and boil together until boiling five to seven times. Pour out the liquid, add Puxiao (Natrii Sulfas) powder. Fumigate and wash the affected area to treat Hong Kong foot.
Daji (Euphorbiae Pekinensis Radix), Chuanyutou (Aconiti Radix Praeparata) (processed, peel and navel removed), Wanjingye (Cacalia Japonicae Folium), Caowutou (Aconiti Kusnezoffii Radix) (raw, peel and tip removed), Shinanye (Rhodoleiae Hamamelidis Folium), Bencao (Ligustici Wallichii Rhizoma et Radix) (cleaned of earth, dried), Du [Zhi] (Eucommiae Cortex) [Note: 'Du' likely refers to Eucommiae Cortex or similar, extracted as present]. All ingredients in equal parts, coarsely chopped. For each use, take 1.5 liang, add five sheng of water, boil until boiling three to five times. While hot, fumigate, wash, and rinse the affected area, then wipe dry. Avoid exposure to wind.
Indications: Cold-dampness invading the meridians, causing pain in the legs and arms, and inability to flex or extend. This formula relaxes the sinews, relieves pain, dispels wind, and removes dampness.
Ingredients: Wancansha (Bombyx Batryticatus), Shechuangzi (Cnidii Fructus) (stir-fried, 1 sheng each); Rougui (Cinnamomi Cortex), Jingjie Sui (Schizonepetae Spica), Ganheyeye (Nelumbinis Folium) (the above three herbs, 3 liang each)... Coarsely chop all ingredients. Take 2 liang of herbs, add five sheng of water, boil with scallion and Sichuan peppercorn, strain the dregs, and use the liquid to wash/rinse.
Indications: Numbness over the whole body, pain in the waist and feet, tense sinews, and bone pain.
Ingredients: Tianxianzi (Hyoscyami Semen), Caowutou (Aconiti Kusnezoffii Radix) (raw, peel and tip removed), Shechuangzi (Cnidii Fructus), Muli (Ostreae Concha) [processing method missing in text], Jiangjiang (Zingiberis Rhizoma Praeparatum) (the above five herbs, 3 liang each). Coarsely chop all ingredients. Divide into two portions. For each portion, add five sheng of water, boil five to seven times, strain the dregs, and use to wash/rinse. Cover with a blanket; sweating indicates efficacy.
Indications: Cold-damp Hong Kong foot; immediate effect upon washing/rinsing.
Ingredients: Jinmaogouji (Cibotii Rhizoma) (remove hairs), Wuzhuyu (Evodiae Fructus) (raw), Shanzhuyu (Corni Fructus) (raw), Muguezi (Momordicae Semen) (remove shell) (the above four herbs, 1 liang each). Coarsely chop all ingredients, divide into four doses. For each dose, add five bowls of water, boil several times. While hot, first fumigate, then remove dregs and use the liquid to wash/rinse.