雷公云∶凡使，采后，净拣择了，蒸，从午至酉，出，日干，于木臼中，舂令皮上刺尽
，用酒拌，再蒸，从午至酉，出，日干用。
雷公云∶凡使，勿用木耆草，真相似，只是生时叶短并根横。
凡修事，先须去头上皱皮，了，蒸半日，出，后用手擘令细，于槐砧上锉用。
雷公云∶凡使，先须用清酒浸一宿，至明，以棕刷刷去沙土、浮甲尽，劈破中心，去白
膜一重，如竹丝草样是，此偏隔人心前气不散，令人上气不出。
凡使用，先须酒浸，并刷草了，却，蒸，从午至酉，出，又用酥炙得所。
雷公云∶凡使，勿用松黄并黄蒿。其二件全似，只是味 及吐人。
凡欲使蒲黄，须隔三重纸焙令色黄，蒸半日，却，焙令干用之妙。
雷公云∶凡使，勿用草茆根，缘真似续断，若误用，服之令人筋软。
凡采得后，横切，锉之，又去向里硬筋，了，用酒浸一伏时，焙干用。
雷公云∶凡使，勿用独漏，缘似漏芦，只是味苦、酸。误服，令人吐不止，须细验。
夫使漏芦，细锉，拌生甘草相对蒸，从巳至申，去甘草，净拣用。
雷公云∶今蔷薇也。
凡采得，去根，并用粗布拭黄毛，了，用刀于槐砧上细锉，用浆水拌令湿，蒸一宿至明
，出，日干用。
雷公云∶凡使，勿用赤柳草根，真似茜根，只是味酸涩，不入药中用。若服，令人患内
障眼，速服甘草水解之，即毒瓦斯散。
凡使茜根，用铜刀于槐砧上锉，日干。
勿犯铁并铅。
Lei Gong said: Whenever using Tribulus Fructus (Jili Zi, 蒺藜子), after harvesting, first perform cleaning and selection. Then steam it from Wu hour (11:00-13:00) to You hour (17:00-19:00). Take it out and dry it in the sun. Place it in a wooden mortar and pound it until all thorns on the skin are removed. Mix with wine, steam again from Wu hour to You hour, take out, and dry in the sun for use.
Lei Gong said: Whenever using Pollen Typhae (Puhuang, 蒲黄), do not use Arnebiae Radix et Rhizoma (Muxu Cao, 木耆草), as they look very similar; the difference lies in the shorter leaves and horizontal roots when growing. For processing, first remove the wrinkled skin at the top, then steam for half a day (or half a shichen). Take out, break into fine pieces by hand, and chop finely on a locust wood cutting board for use.
Lei Gong said: Whenever using Dipsaci Radix (Xuduan, 续断), first soak in clear wine overnight. At dawn, brush off sand, soil, and floating epidermis with a palm fiber brush. Split the center and remove one layer of white membrane, which resembles bamboo silk grass. If not removed, it may obstruct the Qi in front of the heart, causing rebellious Qi that cannot be exhaled. For use, first soak in wine, brush clean, then steam from Wu hour to You hour. Take out, and roast with butter (Su, 酥) to the appropriate degree.
Lei Gong said: Whenever using [Herb Name Implied/Contextual], do not use Pinelliae Rhizoma Preparatum (Songhuang, 松黄 - note: likely refers to a specific local herb or typo for another substance resembling Puhuang) and Artemisia scoparia (Huanghao, 黄蒿). These two resemble each other completely, differing only in taste and their ability to induce vomiting. To use Puhuang (Pollen Typhae), bake it through three layers of paper until yellow, steam for half a day, then bake until dry for optimal effect.
Lei Gong said: Whenever using [Herb Name Implied/Contextual], do not use Imperatae Rhizoma (Caomao Gen, 草茆根), because it truly resembles Dipsaci Radix (Xuduan). If mistakenly used, it will cause softness of the tendons. After harvesting, slice horizontally, chop, remove the hard fibers inside, soak in wine for one fushi (a period of time), and bake dry for use.
Lei Gong said: Whenever using Euphorbiae Humifusae Radix (Loushu, 漏芦), do not use [Herb Name: Dulou, 独漏], because it resembles Loushu but has a bitter and sour taste. Accidental ingestion causes continuous vomiting; careful verification is required. To use Loushu, chop finely, mix with raw Glycyrrhizae Radix et Rhizoma (Sheng Gancao, 生甘草), and steam relative to each other from Si hour (09:00-11:00) to Shen hour (15:00-17:00). Remove the Licorice, select cleanly, and use.
Lei Gong said: This refers to Rosa rugosa (Qiangwei, 蔷薇). After harvesting, remove the roots and wipe off the yellow hairs using coarse cloth. Finely chop on a locust wood cutting board. Moisten with fermented grain water (Jiangshui, 浆水), steam overnight until dawn, take out, and dry in the sun for use.
Lei Gong said: Whenever using Rubiae Radix et Rhizoma (Qian Gen, 茜根), do not use Salix matudanae Radix et Cortex (Chiliugong Cao, 赤柳草根), as they truly resemble Qian Gen but have a sour and astringent taste and are not suitable for medicinal use. Ingestion can cause internal cataracts; quickly administer Glycyrrhizae Radix et Rhizoma (Gancao, 甘草) decoction to detoxify, and the toxic qi will dissipate. To process Qian Gen, chop with a copper knife on a locust wood cutting board and dry in the sun. Do not come into contact with iron or lead.