雷公云∶凡使，只用蕊壳，不用茎叶。若一时使，即空心，令人气咽，小便不禁。
凡欲用，先须以堇竹沥浸一伏时，漉出，晒干用。
雷公云∶凡采得后，须用蒲草重重相隔，入甑蒸两伏时后出，干晒，拣去蒲草尽了用之
使用时，勿令犯铜，饵之后噎人喉，丧人目。
雷公云∶凡使，秦并艽，须于脚文处认取。左文列为秦，即治疾；艽即发香港脚。
凡用秦，先以布拭上黄肉毛尽，然后用还元汤浸一宿，至明出，日干用。
雷公云∶凡使，先于槐砧上细锉，焙干，木臼杵捣。
勿令犯铁器。
雷公云∶凡使，先于柳木灰中炮令黄，擘破，去内口鼻上有米许大者心一小颗，后拌糯
米于 上同炒，待米黄熟，然后去米，取出。
其中有独颗团、不作两片、无皱者，号曰丹龙精，不入用。若误服，令人筋脉永不收，
用黄精、小蓝汁合服，立愈。
雷公云∶凡采得后，勿用四条作一处生者，此名丧公藤。兼勿用马蔺，并不入药中。
凡使，采得后，刮削上皮，细锉，用黄精亦细锉，以竹刀切二味等分，两度蒸一伏时后
，出，于日中晒干，去黄精用之。
雷公云∶凡使，时呼仙灵脾，须用夹刀夹去叶四畔花 尽后，细锉，用羊脂相对拌炒过
，待羊脂尽为度。
每修事一斤，用羊脂四两为度也。
雷公说：凡是使用瞿麦时，只取花蕊和果实壳，不使用茎和叶。如果茎叶一起使用，会导致人空腹状态下出现气逆咽喉、小便失禁的症状。
凡是要使用瞿麦，必须先以堇竹沥浸泡一个昼夜（约24小时），然后滤出，晒干后使用。
雷公说：凡是采收后，必须用蒲草层层隔开，放入甑中蒸两个昼夜，取出后晒干，拣尽蒲草后使用。
使用时，不要让瞿麦接触铜器，否则服用后会噎住喉咙，损害视力。
雷公说：凡是使用秦艽时，必须在根部的纹理处辨认。左侧纹理整齐的是“秦”，可以治疗疾病；右侧纹理散乱的是“艽”，会引发香港脚（足部肿痛）。
凡是用秦艽，先用布擦去表面黄色的绒毛，然后用还元汤浸泡一夜，第二天早上取出，晒干后使用。
雷公说：凡是使用狗脊时，先在槐木砧板上细切，焙干，再用木臼杵捣碎。
不要让狗脊接触铁器。
雷公说：凡是使用黄精时，先在柳木灰中炮制至黄色，掰开，去掉内部口鼻状结构上米粒大小的一颗心，然后将糯米拌在上面共同炒制，待米炒至黄熟，然后去掉糯米，取出药材。
其中有一颗团状、不分为两片、无皱纹的，称为“丹龙精”，不可入药使用。如果误服，会导致筋脉永远无法收缩恢复，此时可用黄精和小蓝汁合服，立即痊愈。
雷公说：凡是采收后，不要用四条长在一起的，这种名叫“丧公藤”。同时也不要使用马蔺，它们都不入药。
凡是使用淫羊藿时，采收后刮削表皮，细切，将黄精也细切，用竹刀将这两味药按等分切开，两次蒸一个昼夜后，取出在阳光下晒干，去掉黄精后使用。
雷公说：凡是使用淫羊藿时，当时人称它为仙灵脾，必须用夹刀夹去叶片四周的花，然后细切，用羊脂相对拌炒，直到羊脂完全被吸收为止。
每修治一斤药材，用羊脂四两为标准。
Lei Gong said: When using Dianthus superbus (Qumai), only the calyx and fruit shell are used; stems and leaves are not. If used together, it causes qi stagnation in the throat and urinary incontinence on an empty stomach.
Before use, Dianthus superbus must be soaked in Jin Zhu Li (Bamboo Sap from Dianthus) for one diurnal cycle (24 hours), then drained and sun-dried for use.
Lei Gong said: After harvesting, Dianthus superbus must be layered with cattail grass, steamed in a steamer for two diurnal cycles, then taken out, sun-dried, and the cattail grass completely removed before use.
During use, avoid contact with copper vessels. Ingestion after such contact causes throat obstruction and loss of vision.
Lei Gong said: When using Gentiana macrophylla (Qinjiao), identification must be made at the root texture. The left-textured variety is "Qin," which treats diseases; the right-textured variety is "Jiao," which induces Hong Kong Foot (podagra/foot swelling).
When using Gentiana macrophylla, first wipe off the yellow hairy coating with cloth, then soak in Huanyuan Tang (Restoring Origin Decoction) overnight. Take out the next morning and sun-dry for use.
Lei Gong said: When using Cibotium barometz (Gouji), finely chop it on a locust wood cutting board, dry by roasting, and pound in a wooden mortar.
Avoid contact with iron vessels.
Lei Gong said: When using Polygonatum sibiricum (Huangjing), first roast it in willow ash until yellow, break it open, and remove the small heart-shaped core about the size of a rice grain located in the internal mouth/nose structure. Then mix with glutinous rice and stir-fry together. When the rice turns yellow and cooked, remove the rice and take out the herb.
Those that are single round pieces, not split into two, and without wrinkles are called Dan Long Jing (Red Dragon Essence) and are not for medicinal use. If mistakenly ingested, it causes permanent flaccidity of sinews and vessels; this can be immediately cured by taking Polygonatum sibiricum combined with Indigofera tinctoria juice (Xiao Lan Zhi).
Lei Gong said: After harvesting, do not use those growing in clusters of four, known as Sangong Teng (Corpse-Abandoning Vine). Also, do not use Iris lactea (Malin); neither is used in medicine.
When using Epimedium (Yinyanghuo), scrape off the epidermis after harvest, finely chop, and also finely chop Polygonatum sibiricum. Cut both ingredients equally with a bamboo knife, steam twice for one diurnal cycle, then take out and sun-dry. Remove the Polygonatum sibiricum and use the Epimedium.
Lei Gong said: When using Epimedium, commonly referred to as Xianlingpi (Immortal Spirit Spleen), use shears to remove all flowers from the edges of the leaves, then finely chop. Stir-fry with sheep fat until the fat is fully absorbed.
For every jin (approx. 500g) of processed material, use 4 liang (approx. 200g) of sheep fat as the standard.
Lei Gong said: When using Smilax glabra (Tufuling), do not use Tou Shan Teng. Its Da Lang Gen resembles Tou Shan Teng but has a bitter taste at the tip and should not be ingested.
For processing Smilax glabra, finely chop, mix with wine, and steam from Si hour to Shen hour (approx. 9 AM to 3 PM). Take out, sun-dry, and use.