雷公云∶凡使，先去髭。有白如练色者，号曰羊须草，自然不同。采得后，去头、土了
，用东流水淘洗令净，用蜜浸一宿，至明，于火上焙干用。
凡修一两，用蜜二分。
雷公云∶凡使，须用蜡水蒸之，待水干取，去头并两畔髭，细锉用。
每修事紫草一斤，用蜡三两，于铛中 ，熔尽，便投蜡水作汤用。
雷公云∶凡使，勿用野蒿根，缘真似前胡，只是味粗酸。若误用，令人胃反不受食。若
是前胡，味甘、微苦。
凡修事，先用刀刮上苍黑皮并髭、土了，细锉，用甜竹沥浸令润，于日中晒干用之。
雷公云∶凡使，收得后，便粗杵。入甘草叶相拌对蒸，从巳至未，出，焙干，去甘草叶
，取用。
雷公云∶凡采得后，用糯米泔汁浸一宿，至明取出，去髭了，于槐砧上细锉，蒸，从巳
至申，出，用。
雷公云∶凡采得，阴干，去头并白蕊，于槐砧上锉，拌豆，淋酒蒸，从巳至未，出，晒
令干用。
雷公云∶凡使，采之，净拣，勿令有杂子，然后用酒拌蒸，待上有薄白霜重出，却用布
拭上，然后焙干，别捣如粉用。
雷公云∶凡使，先须用生乌豆、并紫背天葵和海藻三件，同蒸一伏时，候日干用之。
雷公云∶凡使，须要别识雄、雌，其形不同。大泽兰形叶皆圆，根青黄，能生血、调气
、养荣合；小泽兰迥别，采得后看，叶上斑，根须尖，此药能破血，通久积。
凡修事小泽兰，须细锉之，用绢袋盛，悬于屋南畔角上，令干用。
Lei Gong said: When using Ziwan (Asteris Radix et Rhizoma), one must first remove the rootlets. There is a variety with white color like silk, called Yangxucao (Sheep Beard Grass), which naturally differs in properties. After harvesting, remove the head and soil, wash thoroughly with flowing water from the east, soak in honey overnight, and the next morning, dry on fire for use.
For every liang of preparation, use two fen of honey.
Lei Gong said: When using Zicao (Arnebiae Radix), it must be steamed with wax water. Wait until the water dries up to take out, remove the head and lateral rootlets, finely chop, and use.
For every jin of Zicao prepared, use three liang of wax. Melt the wax completely in a pan, then use the wax water as a decoction medium.
Lei Gong said: When using Qianhu (Peucedani Radix), do not use the roots of Ye Hao (wild mugwort), because it resembles Qianhu but has a coarse, sour taste. If mistakenly used, it causes gastric reflux and inability to eat. True Qianhu tastes sweet and slightly bitter.
When preparing Qianhu, first scrape off the dark green-black skin, rootlets, and soil with a knife, finely chop, soak in sweet bamboo sap until moist, and dry in the sun for use.
Lei Gong said: When using Gancaoye (Licorice Leaf), after collection, coarsely pound it. Mix with Gancao Ye (Licorice Leaves) and steam together from Si hour to Wei hour. Take out, dry by baking, remove the Licorice leaves, and use the herb.
Lei Gong said: After collection, soak in rice washing water overnight. The next morning, take out, remove rootlets, finely chop on a locust wood cutting board, steam from Si hour to Shen hour, take out, and use.
Lei Gong said: After collection, dry in shade, remove the head and white stamens, chop on a locust wood cutting board, mix with Dou (soybean product), pour wine over it, steam from Si hour to Wei hour, take out, and dry in the sun for use.
Lei Gong said: When using, after collection, carefully select to ensure no mixed seeds remain. Then mix with wine and steam. When a thin white frost appears on the surface, take out again, wipe clean with cloth, then bake dry, separately pound into powder for use.
Lei Gong said: When using, first must use Sheng Wudou (raw black soybeans), Zibeitiankui (Ophiopogon japonicus var. bulbifer or similar local herb), and Haizao (Sargassum) these three ingredients, steam together for one fu period (approx. 2-4 hours depending on context, often implies a full cycle or specific duration), wait for sun drying, and use.
Lei Gong said: When using Zelan (Lycopus lucidus), one must distinguish between male and female, as their forms differ. Da Zelan (Large Lycopus) has round leaves and stems, yellowish-green roots; it can generate blood, regulate qi, and nourish ying. Xiao Zelan (Small Lycopus) is quite different; upon collection, observe spots on leaves and sharp rootlets; this herb can break blood stasis and resolve long-standing accumulations.
When preparing Xiao Zelan, it must be finely chopped, placed in a silk bag, hung in the corner of the south side of the house, and dried for use.