火类 土类
主治痈疽发背不起。瘀肉不腐。及阴疮瘰 。流注 疮顽疮。然火吹灭。（日炙二次。）
未溃
拔毒止痛。已溃补接阳气。去腐生肌。凡一切补药诸膏。宜此火煎之。但不可点艾伤肌。（
震亨曰∶火以畅达、拔引郁毒、此从治之法也、时珍曰∶桑木能利关节、养津液、得火则拔
引毒瓦斯、而祛逐风寒、所以能去腐生新也、抱朴子云∶一切仙药、不得桑煎不服、桑乃箕星
之精、能助药力、除风寒痹诸痛、久服、终身不患风疾故也。）
栎炭火、宜 炼一切金石药。 炭火、宜烹煎炙焙百药丸散。（时珍曰∶烧木为炭、木
久则
腐、而炭入土不腐者、木有生性、炭无生性也、葬家用炭、能使虫蚁不入、竹木之根自回、
亦缘其无生性尔。）
宜煎一切滋补药。（时珍曰∶凡服汤药、虽品物专精、修治如法、而煎药者卤莽造次、
水火
不良、火候失度、药亦无功。观夫茶味之美恶、饭味之甘 、皆系于水火烹饪之得失、故煎
药须用小心老成人、以深罐密封、新水活火、先武后文、如法服之、未有不效者、火用陈芦
枯竹、取其不强、不损药力也、桑柴火取其能助药力、 炭取其力慢、栎炭取其力紧、温养
用糠及马屎牛屎者、取其暖、而能使药力匀遍也。）
治小儿惊风，昏迷搐搦窜视诸病。又治头风胀痛。视头额太阳络脉盛处。以灯心蘸麻油。
点
灯淬之。良。外痔肿痛者。亦淬之。油能去风解毒。火能通经也。小儿初生。因冒寒气欲绝
者。勿断脐。急烘絮包之。将胎衣烘热。用灯炷于脐下。往来燎之。暖气入腹内。气回自苏。
去风退赤甚妙。（时珍曰∶凡灯惟胡麻油苏子油然者、能明目治
病、其余诸油灯烟、皆能损目、亦不治病也。）
Fire Category, Earth Category (Refers to medicinal materials or therapies utilizing fire or belonging to the Earth element)
Indications: Carbuncles and back sores (severe purulent infections of the back) that are flat and do not rise; necrotic flesh that does not rot; as well as yin sores, scrofula (tuberculous lymphadenitis of the neck), liuzhu (multiple deep-seated abscesses), and stubborn ulcers. Usage: Extinguish the flame. (Sun-dry twice.)
Before ulceration:
Has the effect of drawing out toxins and relieving pain.
After ulceration:
Has the effects of supplementing and connecting Yang Qi, removing necrotic tissue, and generating new muscle. All tonifying medicines and ointments should be decocted using this type of fire. However, moxa direct moxibustion should be avoided to prevent damaging the skin. (Zhu Zhenheng stated: Fire can facilitate unblocking and draining, drawing out stagnant toxins; this is a method of "treating in accordance with" (Congzhi). Li Shizhen stated: Mulberry wood can benefit joints and nourish body fluids. When ignited, it draws out toxic vapors and expels wind-cold, thereby enabling the removal of necrotic tissue and generation of new tissue. Baopuzi stated: All immortal medicines are ineffective unless decocted with mulberry wood. The mulberry tree is the essence of the Ji Star, capable of assisting medicinal potency, eliminating wind-cold bi-syndrome and various pains. Long-term use prevents wind diseases for life.)
Oak charcoal fire: Suitable for refining various mineral and metallic drugs.
Charcoal fire: Suitable for decocting, roasting, and baking various pills and powders. (Li Shizhen stated: Burning wood into charcoal; wood rots over time, but charcoal buried in soil does not rot because wood possesses a "living nature," whereas charcoal lacks it. Funeral practitioners use charcoal to prevent insects and ants from entering, allowing bamboo and wood roots to regenerate naturally, also due to its lack of living nature.)
Suitable for decocting all kinds of tonifying medicines. (Li Shizhen stated: Regarding the administration of herbal decoctions, even if the ingredients are of superior quality and processed correctly, if the person decocting is careless, the water and fire are improper, or the heat control is inaccurate, the medicine will be ineffective. Observe how the quality of tea flavor and the taste of rice depend on the success or failure of water and fire cooking. Therefore, decocting requires careful and experienced individuals, using deep pots sealed tightly, fresh water, and active fire. Start with strong fire (Wu Huo) then switch to mild fire (Wen Huo). Administer according to method, and there will be no ineffectiveness. For fuel, dried reeds and dead bamboo are chosen for their mild heat, which does not damage medicinal potency. Mulberry wood fire is chosen for its ability to assist medicinal potency. Charcoal fire is chosen for its slow heat. Oak charcoal fire is chosen for its intense heat. For warming and nourishing, bran, horse manure, and cow manure are used for their warmth, ensuring the medicinal potency spreads evenly.)
Treats pediatric convulsive disease (Jing Feng), including coma, spasms, and upward deviation of eyes. Also treats head wind causing distending pain. Observe the areas where collaterals on the head, forehead, and temples are prominent. Dip rush pith (Jiedixin) in sesame oil, light it, and cauterize the affected area. This is effective. External hemorrhoids with swelling and pain can also be treated by cauterization. Oil dispels wind and resolves toxicity; fire unblocks meridians. For newborns who are near death due to exposure to cold qi, do not cut the umbilical cord immediately. Quickly wrap them in heated cotton wadding. Heat the placenta, place the lamp wick below the navel, and roast it back and forth. The warm qi enters the abdomen, Qi returns, and consciousness recovers spontaneously. Dispelling wind and reducing redness is very effective. (Li Shizhen stated: Only lamps lit with sesame oil and perilla seed oil can brighten the eyes and treat diseases. The smoke from other types of oil lamps damages the eyes and does not treat diseases.)