雷公云∶凡使，勿误用和圆子、蔓子、土伏子。其色样、外形真似木瓜，只气味、效并
向里子各不同。若木瓜，皮薄、微赤黄、香、甘、酸、不涩，调营卫，助谷气；向里子头尖
，一面方，是真木瓜；若和圆子，色微黄、蒂、核粗、子小、圆、味涩、微咸，伤人气；蔓
子颗小，亦似木瓜，味绝涩，不堪用；土伏子似木瓜，味绝涩，子如大样油麻，又苦涩，不
堪用；若饵之，令人目涩、目赤，多赤筋痛。
凡使木瓜，勿令犯铁，用铜刀削去硬皮并子，薄切，于日中晒，却，用黄牛乳汁拌蒸，
从巳至未，其木瓜如膏煎，却，于日中薄摊，晒干用也。
雷公云∶凡使，采得后秤，湿者一叶重一两，干者三叶重一两者，是气足，堪用。
夫用，使粗布拭上毛令尽，用甘草汤洗一遍，却，用绵再拭令干。
每一两，以酥一分炙之，酥尽为度。
雷公云∶金锁夭，时呼为灰 ，是金锁夭叶，扑蔓翠上，往往有金星，堪用也。若白青
色，是忌女茎，不入用也。若使金锁夭叶，茎高低二尺五寸，妙也。若长若短，不中使。
凡用，勿令犯水，先去根，日干，用布拭上肉毛令尽，细锉，焙干用之。
雷公云∶曲，凡使，捣作末后，掘地坑，深二尺，用物裹，内坑中至一宿，明出，焙干
用。
雷公云∶凡使，勿用革牛草，真相似，其革牛草腥、涩。
凡使白 荷，以铜刀刮上粗皮一重了，细切，入砂盆中研如膏，只收取自然汁，炼作煎
，却，于新盆器中摊令冷，如干胶煎，刮取，研用。
Lei Gong said: When using Mu Gua (Chaenomeles Fruit), do not mistakenly use He Yuan Zi, Man Zi, or Tu Fu Zi. Their color and appearance externally resemble Mu Gua closely, but their odor and efficacy differ significantly from Xiang Li Zi. True Mu Gua has thin skin, is slightly reddish-yellow, fragrant, sweet and sour in taste, and non-astringent; it harmonizes Ying and Wei (Nutritive and Defensive Qi) and assists Gu Qi (Grain Qi). Xiang Li Zi has a pointed head and one square side, which identifies it as true Mu Gua. If He Yuan Zi is used, it is slightly yellow with thick stems and cores, small round seeds, astringent and slightly salty in taste, and damages Ren Qi (Human Vital Qi). Man Zi is small in size, also resembling Mu Gua, but extremely astringent in taste and unsuitable for use. Tu Fu Zi resembles Mu Gua, is extremely astringent, its seeds are like large sesame seeds, bitter and astringent, and unsuitable for use. Ingesting it causes dry eyes, red eyes, and pain from excessive red tendons.
When processing Mu Gua, avoid contact with iron. Use a copper knife to peel off the hard skin and remove the seeds, slice thinly, and sun-dry. Then, mix with Huang Niu Nai Zhi (Yellow Cow Milk) and steam from Si hour to Wei hour. The Mu Gua will become paste-like. Spread it thinly on the sun to dry completely before use.
Lei Gong said: When using Mu Gua, weigh it after harvesting. If one wet leaf weighs one liang, or three dry leaves weigh one liang, the medicinal Qi is sufficient and it is usable.
To prepare, wipe off the hairs with coarse cloth until clean, wash once with Gan Cao Tang (Licorice Decoction), then wipe dry with cotton cloth.
For every one liang of Mu Gua, roast it with one fen of Su (Butter/Ghee) until the Su is fully absorbed.
Lei Gong said: Jin Suo Yao, commonly called Hui, refers to the leaves of Jin Suo Yao. These leaves often have "golden stars" when brushed against Man Cui, and are usable. If they are white-green in color, they are Ji Nu Jing (Taboo Female Stamen) and should not be used. For optimal use of Jin Suo Yao leaves, the stem height should be two chi five cun. Stems that are too long or short are unsuitable.
When using, avoid water contact. Remove roots first, sun-dry, wipe off fleshy hairs with cloth, cut finely, and bake dry before use.
Lei Gong said: Qu (Medicated Leaven), when used, crush into powder, dig a pit two chi deep, wrap the powder in material, place it in the pit overnight, retrieve it the next day, bake dry, and use.
Lei Gong said: Do not use Ge Niu Cao, which looks similar but has a fishy and astringent odor.
When using Bai He (White Lotus Seed/Petal context implies specific preparation, likely Bai Lian or similar lotus part based on text "Bai He", though standard Bai He is Lily Bulb, here context suggests lotus related due to "He"), scrape off the outer rough skin with a copper knife, cut finely, grind in a mortar until paste-like, collect only the natural juice, refine into a syrup/jian, spread in a new vessel to cool until solid like glue, scrape off, and grind for use.