雷公云∶凡使，勿用头粗浓并尾大者，为孔公石，不用。色黑及经大火惊过，并久在地
上收者，曾经药物制者，并不得用。须要鲜明、薄而有光润者，似鹅翎筒子为上，有长五、
六寸者。
凡修事法∶以五香水煮过一伏时，然后漉出；又别用甘草、紫背天葵汁渍，再煮一伏时
。凡八两钟乳，用沉香、零陵、藿香、甘松、白茅等各一两，以水先煮过一度了，第二度
方用甘草等二味各二两再煮；了，漉出，拭干，缓火焙之；然后入臼，杵如粉，筛过，却，
入钵中，令有力少壮者三、两人，不住研三日夜勿歇；然后用水飞，澄了，以绢笼之，于日
中晒令干；又入钵中研二万遍后，以瓷合子收贮用之。
雷公云∶凡使，须以瓷瓶盛，于火中 令内外通赤，用钳揭起盖，旋安石蜂窠于赤瓶子
中，烧蜂窠尽为度；将钳夹出，放冷，敲碎，入钵中研如粉后，于屋下掘一坑，可深五寸，
却，以纸裹，留坑中一宿，取出，再研。
每修事十两，用石蜂窠六两，尽为度。
又云∶凡使，要光明如水精，酸、咸、涩味全者，研如粉，于瓷瓶中盛。其瓶盛得三升
已来，以六一泥泥，于火畔炙之令干；置研了白矾于瓶内，用五方草、紫背天葵二味自然
汁各一镒，旋旋添白矾于中，下火逼令药汁干；用盖子并瓶口，更以泥泥上，下用火一百斤
；从巳至未，去火，取白矾瓶出，放冷，敲破，取白矾，捣细，研如轻粉，方用之。
若经大火一 ，色如银，自然伏火，铢累不失。
雷公说：凡是使用钟乳石，不要选用头部粗大浓重以及尾部硕大的，那是“孔公石”，不能使用。颜色发黑、经过大火惊吓（高温煅烧）过的，以及长期在地面上收藏的、曾经被药物处理过的，都不得使用。必须选择色泽鲜明、质地薄且有光泽润泽的，形状像鹅毛管一样的为上品，长度在五到六寸左右的最好。
凡是炮制的方法：先用五香水煮一个时辰（两小时），然后滤出；另外再用甘草和紫背天葵的汁液浸泡，再次煮一个时辰。对于八两钟乳，使用沉香、零陵香、藿香、甘松、白茅根各一两，先用水煮过一次，第二次才用甘草等两味药各二两再煮；煮好后，滤出，擦干，用慢火焙干；然后放入臼中，捣成粉末，筛过，再放入钵中，让有力气的青壮年三两人，不停地研磨三天三夜不停歇；然后用水飞法（加水搅拌沉淀）处理，澄清后，用绢布过滤，在阳光下晒至干燥；再放入钵中研磨两万遍后，用瓷罐收存备用。
雷公说：凡是使用白矾，必须以瓷瓶盛装，在火中烧得内外通红，用钳子揭开盖子，随即把石蜂窠放入通红的瓷瓶中，烧尽石蜂窠为止；用钳子夹出来，放冷，敲碎，放入钵中研成粉末后，在屋檐下挖一个坑，大约深五寸，用纸包裹好，留在坑中过夜，取出后再研。
每次炮制十两白矾，使用石蜂窠六两，以此为准。
又说：凡是使用白矾，要挑选像水晶一样光亮，酸、咸、涩味道俱全的，研成粉末，盛在瓷瓶中。这个瓶子容量在三升左右，用六一泥涂抹瓶身，在火旁烤干；将研磨好的白矾放入瓶内，用五方草、紫背天葵两种药材的自然汁液各一镒（古代重量单位），慢慢加入白矾中，下面用火烘烤使药汁变干；用盖子盖住瓶口，再用泥封固，下面用一百斤炭火；从巳时到未时（约上午9点到下午3点），撤去火，取出白矾瓶，放冷，敲破瓶子，取出白矾，捣细，研成轻粉状，才能使用。
Lei Gong said: When using Congru (Stalactite), do not use those with thick, heavy heads or large tails, as these are Konggong Stone (a type of calcite) and should not be used. Do not use those that are black in color, have been subjected to intense heat (calcination), have been stored on the ground for a long time, or have been previously processed with medicinal substances. One must select those that are bright in color, thin, and lustrous; those resembling goose quill tubes are considered superior, preferably five to six cun in length.
The processing method is as follows: Boil in Five-Flavor Perfume Water (Wu Xiang Shui) for one fu shi (approx. 2 hours), then strain out. Separately, soak in the juice of Gancao (Licorice Root, Glycyrrhizae Radix et Rhizoma) and Zi Bei Tian Kui (Ottelia acuminata juice), and boil again for one fu shi. For eight liang of Congru, use Chenxiang (Agarwood, Aquilariae Lignum Resinatum), Lingling (Lingzhi Fragrant Herb, Polygala sibirica), Huoxiang (Patchouli, Pogostemonis Herba), Gansong (Sweet Sassafras, Nardostachyos Radix et Rhizoma), and Baimao (Imperata Rhizome, Imperatae Rhizoma), each one liang. Boil once with water first, then use Gancao and another unspecified herb (context implies the remaining ingredients from the previous step or specific additives mentioned earlier, here interpreted as the two main soaking agents or specific pairings) each two liang for a second boiling. After boiling, strain out, wipe dry, and bake over slow fire. Then, pound in a mortar until it becomes powder, sieve it, return it to a钵 (mortar/bowl), and have three or four strong young men grind it continuously for three days and nights without rest. Then, perform water levigation (Shui Fei): add water, stir, let settle, filter through silk gauze, and sun-dry. Grind in a mortar twenty thousand times more, then store in a porcelain jar for use.
Lei Gong said: When using Bai Fan (Alumen), place it in a porcelain bottle and heat it in fire until both inside and outside are red-hot. Use tongs to remove the lid, immediately insert Shi Feng Ke (Stone Beehive/Alum stone found in caves), and burn the beehive completely. Remove with tongs, allow to cool, crush, put into a mortar, grind into powder, then dig a pit under the eaves about five cun deep. Wrap the powder in paper, leave it in the pit overnight, take it out, and grind again.
For every ten liang of Bai Fan processed, use six liang of Shi Feng Ke as the standard limit.
He also said: When selecting Bai Fan, choose those that are bright like crystal and possess complete sour, salty, and astringent tastes. Grind into powder and store in a porcelain bottle. The bottle should hold about three sheng. Coat the bottle with Liu Yi Ni (Six-One Mud, a traditional sealing paste), and dry it by the fire. Place the ground Bai Fan into the bottle. Add one yi (ancient weight unit) of natural juice from Wu Fang Cao (Five-Direction Grass, likely referring to a composite herbal juice) and Zi Bei Tian Kui. Gradually add Bai Fan while heating below to evaporate the juice. Seal the lid and mouth with mud, and burn with one hundred jin of charcoal fuel. From Si hour to Wei hour (approx. 09:00–15:00), extinguish the fire, remove the Bai Fan bottle, let it cool, break the bottle, retrieve the Bai Fan, pound finely, and grind into a light powder before use.
If subjected to intense fire calcination, the color will become silver-like, naturally neutralizing its fiery nature (Fu Huo), and the weight will remain unchanged.