（二十一种 附二十二种）
火有阴阳，乃太极之妙蕴。人尽以火为纯阳，不知有阴火，惟圣人知之。故离卦中虚，
阳中
有阴也。坎卦中实，阴中有阳也。火地生物亦然，阳火无质，以物为质，然后寄其形以燃物
。阴火有质，不必寄形于物，而不能尽焚诸物。盖阳火乃火之魂，属阳。气热。阴火乃火之
魄，属阴。气不热。濒湖统十二火以分阴阳，其曰天之阳火二。太阳火，星精飞火。地之阳
火三；钻木火，击石火，戛金火。人之阳火一；丙丁尹火。夫太阳炙背即暖，星精火有光有
声，其坠地之初，如燔石，手不可近。钻木之火，钻与木皆 热有烟。击石戛金，必两物摩
荡，热则火出，皆有火气。人身君火所呵出之气，天虽极寒，而人气无不热，此皆阳火。为
火之魂，气虽热，必寄形于物乃燃，故水晶取日中之火，承艾而烟起，火殃为飞星之精，入
土乃起焚房屋。钻木击石戛金，非物受其火不能存也。人身丙丁火能解犀角，散积阴之气，
已不啻寄其身而焚之也。其气皆猛烈可知。其曰天之阴火二；龙火，雷火。地之阴火二；石
油火，水中火。人身之阴火二，命门相火，三味真火。龙火不能焚物，止能焚砂石。盖龙本
纯阳，而火反阴者，以阳为体，以阴为用也。雷火不能焚物，能焚金铁。盖雷之击物必有声
，其用属阳，而其体属阴也。砂石本土之余气，为先天火，结以阳体，焚之金铁，为水之母
。本阴精而即以阴体熔之，此五行生克之妙也。石油能于水中生火，凡水中一切物，非石油
不能焚之，水中火本咸精，故海水入夜则明。至阴之气不能焚物也。命门相火即人身欲火，
与三味真火皆能自焚。不能焚物，此皆阴火。为火之魄，气不热，不必寄形于物，而有能焚
不能焚之别。非若阳火之遇物无不消熔也。濒湖仅列其名，又不晰言其故，且其主治功用，
又皆晦之。故特为详述以补。
(Twenty-one types, with twenty-two additional types)
Fire is divided into Yin and Yang, which constitutes the profound essence of the Supreme Ultimate (Taiji). People generally consider fire to be purely Yang, unaware that there is also Yin Fire; only sages understand this. Thus, the Li Trigram (Li Gua, representing Fire) has a broken line in the center, indicating Yin within Yang; the Kan Trigram (Kan Gua, representing Water) has a solid line in the center, indicating Yang within Yin. The earth nurturing living things follows the same principle: Yang Fire lacks substance and relies on other objects as carriers, attaching itself to them to burn. Yin Fire possesses substance and does not need to attach to objects, yet it cannot burn all things. Generally, Yang Fire is the soul of fire, belonging to Yang, with a hot nature. Yin Fire is the魄 (po, corporeal soul) of fire, belonging to Yin, with a non-hot nature. Li Shizhen (Binhulou) categorized twelve types of fire to distinguish between Yin and Yang. He stated: There are two types of Yang Fire in Heaven: Solar Fire and Star Essence Flying Fire. There are three types of Yang Fire on Earth: Fire from drilling wood, fire from striking stones, and fire from scraping metal. There is one type of Yang Fire in humans: Bing-Ding Yin Fire. Solar heat warms the back; Star Essence Fire has light and sound; when it first hits the ground, it resembles burning stones, and hands cannot approach. Fire from drilling wood produces heat and smoke from both the drill and the wood. Fire from striking stones or scraping metal requires friction between the two objects to generate heat and produce fire, emitting a fiery odor. The breath exhaled by the Monarch Fire (Jun Huo) in the human body is always hot, even in extreme cold weather; these are all examples of Yang Fire. As the soul of fire, although its qi is hot, it must attach to an object to burn. Therefore, crystal absorbs fire from the midday sun and produces smoke when placed on moxa; meteorites (huoyang), being the essence of flying stars, cause houses to burn when they fall into the earth. Fire from drilling wood, striking stones, or scraping metal cannot exist unless the object bears the fire. Human Bing-Ding Fire can dissolve rhinoceros horn and dissipate accumulated Yin Qi, effectively burning while attached to the body. Their qi is evidently fierce. He stated: There are two types of Yin Fire in Heaven: Dragon Fire and Thunder Fire. There are two types of Yin Fire on Earth: Petroleum Fire and Water Fire. There are two types of Yin Fire in humans: Mingmen Minister Fire (Mingmen Xiang Huo) and Three Flavors True Fire. Dragon Fire cannot burn ordinary objects but can burn sand and stone. This is because dragons are inherently pure Yang, yet their fire is Yin in function, using Yang as the substance and Yin as the application. Thunder Fire cannot burn ordinary objects but can melt gold and iron. When thunder strikes an object, there is necessarily sound; its action belongs to Yang, but its substance belongs to Yin. Sand and stone are residual qi of the earth, constituting Primordial Fire, formed with a Yang substance. They melt gold and iron, serving as the mother of Water. Although originally Yin Essence, they are melted using a Yin substance, demonstrating the subtlety of the generation and restriction cycles of the Five Elements (Wu Xing). Petroleum can generate fire in water; no object in water can be burned without petroleum. Water Fire is essentially Salt Essence, which is why seawater glows at night. Extreme Yin Qi cannot burn objects. Mingmen Minister Fire is the desire fire in the human body; together with Three Flavors True Fire, it can self-combust but cannot burn external objects. These are all Yin Fire. As the po of fire, its qi is not hot, and it does not need to attach to objects, yet there is a distinction between what it can and cannot burn. Unlike Yang Fire, which melts everything it encounters. Li Shizhen merely listed the names without clearly explaining the reasons, and their therapeutic indications and functions were kept obscure. Therefore, I have detailed them specifically to supplement this knowledge.