宜煎一切滋补药。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。取其缓而能使药力匀遍也。（
濒湖） 凡服汤药。虽品物专精。修治如法。而煎药者卤莽造次。用水不良。火候失度。则
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。即可推矣。是以煎药须
用深罐密封。新水活火。先武后文。如法服之。未有不效者。（又）
主灸百病。若灸诸风冷疾。入硫黄末少许。尤良。凡灸艾火者。宜用阳燧火珠承日。
取太阳真火。其次则钻槐取火。为良。若猝急难备。即用真麻油灯。或蜡烛火。以艾茎烧点
于炷。滋润灸疮。至愈不痛也。其戛金击石钻燧入木之火。皆不可用。盖火无体。因物以为
体。金石之火。烈于草木之火。其入木者。松火难瘥。柏火伤神多汗。桑火伤肌肉。柘火伤
气脉。枣火伤内吐血。橘火伤营卫经络。榆火伤骨失志。竹火伤脉损目也。（濒湖）
附录阳燧 即周礼夫燧火镜也。取铜铸成。其面凹。摩热向日。以艾承之则得火。（濒
湖）
油能去风解毒。火能通经。凡灯惟胡麻油苏子油燃者。能明目治病。其诸鱼油。诸禽兽
油。诸菜子油。棉油。桐油。豆油。石脑油诸灯。烟皆能损目。亦不治病。（濒湖）
主治小儿惊风昏迷搐搦窜视诸病。凡诸惊仰向后者。灯火淬其囟门。两眉际之上下。眼
翻不下者。亦淬其脐之上下。不省人事者。淬其手足心。及心之上下。手拳不开目往上者。
淬其顶心。两手心。撮口出白沫者。淬其口上下及手足心。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。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。又烧铜匙柄熨烙眼
弦内。去风退赤。甚妙。搅肠痧痛。阴阳腹痛。手足冷。但身上有红点。以灯草蘸油点火。
淬于点上。
应当煎煮各种滋补药物。使用火源时，宜选用陈旧的芦苇和干枯的竹子作为燃料，因为它们的火力不强，不会损伤药力。桑柴火取其能够辅助药力。炭火取其火力缓慢，栎木炭取其火力紧实（猛烈）。用于温养的药物，可用谷糠以及马粪、牛粪燃烧供热，因为它们的火力缓和，能使药力均匀遍布。（李时珍）
凡是服用汤剂，虽然药材品种精良，炮制方法得当，但如果煎药的人马虎草率，用水不当，火候失去节制，那么药物也就没有疗效。观察茶叶味道的美丑，米饭味道的甘苦，都取决于水火烹饪的得失，由此可以推知煎药的重要性。因此，煎药必须使用深口罐并密封，用新汲的水和旺盛的火，先武火后文火，按照法度煎煮服用，没有不生效的。（又论）
艾火主治灸治百病。如果灸治各种风冷疾病，加入少许硫黄末，效果尤其好。凡是用艾进行灸疗，适宜用阳燧（凹面铜镜）承接日光取火，以获取太阳的真火；其次则钻木取槐木火，这也是良法。如果遇到紧急且难以准备的情况，就使用真正的麻油灯或蜡烛火，点燃艾茎附着在艾炷上。滋润灸疮，直到痊愈且不疼痛为止。那些敲击金属、撞击石头、钻燧入木所产生的火，都不可使用。因为火本身没有形体，是依附于物体而显现形体的。金石之火，比草木之火猛烈。其中进入木材燃烧产生的火，松火难以治愈疾病，柏火容易使人精神受损且多汗，桑火损伤肌肉，柘火损伤气脉，枣火导致内伤吐血，橘火损伤营卫经络，榆火损伤骨骼并使人意志丧失，竹火损伤血脉并损害眼睛。（李时珍）
附录：阳燧，即《周礼》中提到的夫燧火镜。用铜铸造而成，其表面凹陷，摩擦发热后对着太阳，将艾草放在上面承接即可得火。（李时珍）
油脂能祛风解毒，火能通经活络。凡是只有用胡麻油（黑芝麻油）或苏子油燃烧的灯，才能明目治病。其他的鱼油、禽兽油、菜籽油、棉油、桐油、豆油、石脑油等制成的灯，其烟雾都能损害眼睛，也不能治病。（李时珍）
灯火主治小儿惊风引起的昏迷、抽搐、眼球上翻直视等各种病症。凡是惊风发作时头向后仰的，用灯火淬刺其囟门及两眉际的上下部位；眼睛翻白下不来的，也淬刺其肚脐的上下部位；不省人事的，淬刺其手足心及心窝的上下部位；手握拳不开、眼睛向上看的，淬刺其头顶心及两手心；口撮合、流出白色泡沫的，淬刺其口唇上下及手足心；头风胀痛，观察头部额头及太阳穴处络脉充盈隆起的地方，用灯心草蘸麻油点灯淬刺，效果良好。外痔肿痛的，也用灯火淬刺。小儿刚出生因受寒气侵袭气息将绝者，不要切断脐带，急忙用烘热的棉絮包裹，将胎衣烘热，用灯芯在脐下往来燎烤，使暖气进入腹内，气回自然苏醒。又或用烧热的铜匙柄熨烙眼睑内部，可去风退红，非常奇妙。搅肠痧痛，阴阳腹痛，手足冰冷，只要身上有红点，用灯草蘸油点火，淬刺在红点上。
It is suitable to decoct all kinds of nourishing and tonifying medicines. When using fire, old reeds and withered bamboo should be used as fuel, taking advantage of their mild heat which does not damage the medicinal power. Mulberry wood fire is chosen for its ability to assist the medicinal power. Charcoal provides a slow-acting heat, while oak charcoal provides intense heat. For warming and nourishing purposes, rice bran, horse manure, or cow manure may be burned, as their gentle heat allows the medicinal power to spread evenly throughout the body. (Li Shizhen)
Whenever taking herbal decoctions, even if the ingredients are of superior quality and processed according to proper methods, if the person boiling the medicine is careless or hasty, uses improper water, or fails to control the heat intensity correctly, the medicine will be ineffective. Observing that the quality of tea flavor and the taste of rice depend on the success or failure of water and fire cooking, one can infer the importance of proper decoction. Therefore, decocting medicine requires a deep pot sealed tightly, fresh water, vigorous initial fire followed by gentle simmering, administered according to standard procedures; there is no case where it would fail to be effective. (Further discussion)
Moxibustion with mugwort treats hundreds of diseases. If treating various wind-cold disorders, adding a small amount of sulfur powder yields particularly good results. For moxibustion, it is appropriate to use a Yang Sui (concave bronze mirror) to catch sunlight and generate fire, thereby obtaining the true fire of the sun. Alternatively, drilling fire from locust wood is also excellent. In emergencies when these are unavailable, pure sesame oil lamps or candle flames may be used to ignite the mugwort stem attached to the moxa cone. This moistens the moxibustion wound until it heals without pain. Fires generated by striking metal, hitting stones, or drilling wood into stone must not be used. Fire has no inherent form but takes shape through the material it burns. The fire from metals and stones is fiercer than that from plants. Among fires derived from wood: pine fire is difficult to heal diseases; cypress fire damages the spirit and causes excessive sweating; mulberry fire damages muscles; zhe wood fire damages qi and vessels; jujube fire causes internal bleeding and vomiting blood; orange fire damages Ying and Wei (nutritive and defensive) meridians; elm fire damages bones and leads to loss of willpower; bamboo fire damages blood vessels and harms the eyes. (Li Shizhen)
Appendix: Yang Sui refers to the fire mirror mentioned in the *Rites of Zhou*. It is cast from copper with a concave surface. After being rubbed to generate heat, it is held facing the sun, and mugwort placed upon it catches fire. (Li Shizhen)
Oils can dispel wind and resolve toxicity; fire can unblock meridians. Only lamps burning Hu Ma You (Sesamum indicum Oil) or Su Zi You (Perilla Seed Oil) can brighten the eyes and treat diseases. Lamps made from fish oil, poultry or beast oils, rapeseed oil, cottonseed oil, tung oil, soybean oil, or naphtha produce smoke that damages the eyes and cannot treat diseases. (Li Shizhen)
Fire-lamp cautery treats pediatric convulsive disorders characterized by coma, spasms, upward gaze, and other symptoms. For cases where the head tilts backward due to fright, cauterize the fontanelle and the areas above and below the eyebrows. For eyes rolling up and unable to look down, cauterize the areas above and below the umbilicus. For unconsciousness, cauterize the palms and soles, and the areas above and below the heart region. For clenched fists and upward-gazing eyes, cauterize the vertex of the head and both palms. For mouth contraction with white foam discharge, cauterize the areas above and below the mouth, as well as the palms and soles. For headache with distending pain, observe the prominent collateral vessels on the forehead and temporal regions, and cauterize them with a lamp wick dipped in sesame oil—this is highly effective. External hemorrhoids with swelling and pain can also be treated this way. For newborns whose breath is nearly stopped due to exposure to cold, do not cut the umbilical cord immediately; instead, wrap them quickly in heated cotton wool, warm the placenta, and pass a lit lamp wick back and forth below the umbilicus to allow warmth to enter the abdomen; once Qi returns, consciousness will naturally recover. Additionally, heating a copper spoon handle and applying it to the inner eyelids removes wind and reduces redness, which is very effective. For intestinal colic, Yin-Yang abdominal pain, cold extremities, provided there are red spots on the body, dip a rush pith in oil, light it, and cauterize the red spots.