即杉木、宣散肿胀。
辛温开发。除心腹胀满，香港脚肿痛。（柳子浓纂救死方云∶得香港脚、半夜痞绝、胁块如
石、
昏困且死、郑洵美传杉木汤、服半食顷、大下、块散气通、方用杉木节一升、橘叶一升、无
叶以皮代、大腹槟榔七枚、连子捶碎、童便三升煮、分二服、若一服得快利、停后
服。）散风毒。去恶气。洗毒疮漆疮。稍挟虚者忌用。其木不生白蚁。烧灰。最发火药。
大燥、补命门火、平肝通血脉、引火归元。
辛甘大热。有小毒。气浓纯阳。入肝肾血分。补命门相火之不足。（两肾中间、先天祖
气、
乃真火也、人若无此真阳之火、则无以蒸糟粕而化精微、脾胃衰败、气尽而亡矣。）益阳消
阴。治痼冷沉寒。下焦腹痛。奔豚疝瘕。疏痛百脉。宣导百药。能抑肝风。（木得桂而枯、
削桂钉木根、其木即死。）而扶脾土。（肝木盛则克土、辛平肝木、甘益脾土。）疗虚寒恶食
。湿盛泄泻。（土为木克、不能防水、古行水方中多用之、如五苓散之类。）引无根之火。降
而归元。从治咳逆结气。目赤肿痛。格阳喉痹。上热下寒等证。（以热攻热、名曰从治、若
肺热气不下行、每上见热证、下见足冷、设误用之、祸不旋踵。）通经催生堕胎。（辛热能动
血。）交趾桂最佳。（体松皮直、起花、紫肉黑油、味甜多辣少、今难得。）其次蒙自桂可用
。（距交趾不甚远。）其次安南桂。东京桂亦可用。（以上三宗、体略松、皮直、有花、紫肉
、黄油多、黑油少、味甜少辣多。）姚桂、浔桂、紫荆桂。（俱体重、皮不直、有花皆做上、
味甚辣略甜。）用之不能治病。洋桂、云南桂。（体皆急重、切开肉内、有白点起丝、味苦辣
、尝之舌上稠腻、甚至麻木。）皆大有害。万不可用。去粗皮。（其毒在皮。）不见火。须临
用切碎、群药煎好方入、煎一二沸即服。）得人参、甘草、麦冬良。忌生葱、石脂。（足 筋
急、桂末和白酒涂之、外肾偏肿、桂末水调方寸匕、涂之。）
杉木：具有宣散肿胀的功效。
气味辛温，能开发郁结。可消除心腹部的胀满感，治疗香港脚（足部肿痛）引起的肿痛。（柳子浓编纂的《救死方》记载：有人患香港脚，半夜时痞塞气绝，胁下肿块坚硬如石，昏迷困倦濒临死亡，郑洵美传授了杉木汤，服用约一顿饭的时间后，患者大量排便，肿块消散，气机通畅。方剂组成：杉木节一升，橘叶一升，若无叶可用树皮代替，大腹槟榔七枚，连子捶碎，童便三升煮制，分两次服用。如果第一次服药后通便顺畅，则停止服用第二次。）能疏散风毒，去除恶气。可用于清洗毒疮和漆疮。体质稍虚弱者忌用。杉木木材不生白蚁。将其烧成灰，是火药中极好的助燃剂。
肉桂：性味大燥，能补益命门之火，平抑肝气，疏通血脉，引火归元。
气味辛甘，性质大热，有小毒。气味浓厚，属于纯阳之品。入肝肾血分。能补益命门相火的不足。（两肾中间藏有的先天祖气，就是真火。人如果没有这真阳之火，就无法蒸化糟粕转化为精微物质，导致脾胃衰败，气尽而亡。）能益阳气、消阴寒。治疗顽固性的冷症和沉寒痼冷，以及下焦腹痛、奔豚疝瘕等病证。能疏通百脉疼痛，引导各种药物发挥作用，并能抑制肝风。（树木遇到桂枝就会枯萎，将桂枝削下钉在树根上，树木即会死亡。）同时能扶助脾土。（肝木过盛会克制脾土，肉桂辛味能平抑肝木，甘味能补益脾土。）治疗虚寒导致的食欲不振，湿气盛引起的泄泻。（脾土被肝木克制，不能制约水湿，古代利水方剂中多用此药，如五苓散之类。）能引无根之火下降并回归本源。用于治疗咳逆结气、目赤肿痛、格阳喉痹、上热下寒等证候。（以热治热，称为从治法。如果肺热气不下行，往往上部出现热证，下部出现脚冷的症状，若误用此药，灾祸立刻降临。）能通经、催生、堕胎。（辛热之性能动血。）交趾桂品质最佳。（质地松软，皮纹直，有花纹，肉质紫黑油润，味道甜而辣味少，现在很难得到。）其次是蒙自桂可以使用。（距离交趾不远。）再次是安南桂和东京桂也可以使用。（以上三种，质地略松，皮纹直，有花纹，肉质紫，黄油多，黑油少，味道甜而辣味多。）姚桂、浔桂、紫荆桂。（这些药材体重，皮不直，有花纹但质量较差，味道很辣略带甜味。）用来治病效果不佳。洋桂、云南桂。（质地紧实沉重，切开肉质内部，有白点呈丝状，味道苦辣，尝起来舌头上感觉稠腻，甚至麻木。）这些都有很大危害，万不可使用。需去掉粗皮。（毒性主要在皮中。）避免用火炒，必须在使用前切碎，待其他药物煎好后放入，煮沸一两次即可服用。与人参、甘草、麦冬配伍良好。忌与生葱、赤石脂同用。（足筋拘急，用桂末调和白酒涂抹；外肾偏肿，用桂末水调成一方寸匕的量涂抹。）
Cunninghamia Lignum (Cunninghamia wood): Has the effect of dispersing swelling.
Pungent and warm in nature, it opens up stagnation. It eliminates fullness in the heart and abdomen, and treats Hong Kong foot (swelling and pain in the feet) causing swelling and pain. (Liu Zinong's *Jiushi Fang* records: A patient suffered from Hong Kong foot; at midnight, he experienced blockage and suffocation, with hard masses under the ribs like stones, falling into a coma and nearing death. Zheng Xunmei transmitted the Cunninghamia Decoction. After taking half a meal's worth of time, the patient had a large bowel movement, the masses dissipated, and qi flow was restored. The formula consists of one sheng of Cunninghamia nodes, one sheng of Tangerine Leaf, seven Areca Seeds crushed with their kernels, and three shengs of child urine boiled together, divided into two doses. If the first dose results in smooth defecation, stop taking the second dose.) It disperses wind-toxin and removes foul qi. It can be used to wash toxic sores and lac poisoning. Those with slight deficiency should avoid using it. Its wood does not produce white ants. Burned to ash, it is an excellent accelerant for gunpowder.
Cinnamomi Cortex (Cinnamon bark): Extremely drying, it tonifies the Fire of the Gate of Vitality (Mingmen), soothes the Liver, unblocks blood vessels, and guides fire back to its origin.
Pungent, sweet, and extremely hot, with slight toxicity. Its aroma is dense and purely yang. It enters the Blood aspect of the Liver and Kidney meridians. It tonifies the insufficiency of the Ministerial Fire of the Gate of Vitality. (The innate ancestral qi located between the two kidneys is the True Fire. Without this True Yang Fire, one cannot steam and transform dregs into essence, leading to spleen and stomach failure, exhaustion of qi, and death.) It benefits Yang and dissipates Yin. It treats stubborn cold and deep-seated chill, abdominal pain in the lower jiao, Ben Tun (running piglet) and hernia masses. It unblocks pain in all vessels, guides various medicines, and can suppress Liver Wind. (Wood withers when encountering Cinnamon; if Cinnamon is shaved and nailed into tree roots, the tree dies.) Meanwhile, it supports Spleen Earth. (When Liver Wood is excessive, it overacts on Spleen Earth; the pungency soothes Liver Wood, and the sweetness benefits Spleen Earth.) It treats loss of appetite due to deficiency-cold and diarrhea caused by dampness excess. (When Spleen Earth is controlled by Liver Wood, it cannot control water; ancient diuretic formulas often use this herb, such as Wu Ling San.) It guides rootless fire down and returns it to its origin. It treats cough with qi obstruction, red and swollen eyes, Ge Yang sore throat, upper heat and lower cold syndromes, etc. (Treating heat with heat is called "conforming treatment." If Lung heat fails to descend, heat signs appear above and cold feet below; misuse will bring disaster immediately.) It unblocks menstruation, induces labor, and causes abortion. (Pungent and hot nature can move blood.) Jiaozhi Cinnamon is of the best quality. (Loose texture, straight bark, floral patterns, purple flesh with black oil, sweet taste with less pungency; now difficult to obtain.) Mengzi Cinnamon is next best and usable. (Not far from Jiaozhi.) Annan Cinnamon and Dongjing Cinnamon are also usable. (These three types have slightly loose texture, straight bark, floral patterns, purple flesh, more yellow oil, less black oil, sweet taste with more pungency.) Yao Cinnamon, Xun Cinnamon, and Zijing Cinnamon. (All are heavy, bark not straight, floral patterns present but inferior quality, very pungent with slight sweetness.) They are ineffective in treating diseases. Foreign Cinnamon and Yunnan Cinnamon. (Texture is tight and heavy, cut open to find white dots forming threads inside the flesh, pungent and bitter taste, feels sticky on the tongue, even causing numbness.) These are highly harmful and must never be used. Remove the rough bark. (The toxicity lies in the bark.) Avoid roasting over fire. Must be chopped before use; add after other herbs have decocted, boil for one or two boils, then take. It pairs well with Ginseng Radix et Rhizoma, Licorice Root, and Ophiopogonis Radix. Contraindicated with raw Scallion Stem and Red Halloysite. (For tense leg tendons, mix Cinnamon powder with white wine and apply externally; for unilateral swelling of external genitals, mix Cinnamon powder with water to form a measure of one square inch and apply externally.)