《潜夫论·慎微》中说:“且夫邪之与正,犹水与火,不同原,不得并盛。”《汉书·郊祀志下》:“《易》有八卦,乾坤六子,水火不相逮,雷风不相悖,山泽通气,然后能变化,既成万物也。”火是物体燃烧时所发出的光和焰。物体燃烧有两个条件:一是可燃物要与氧气接触;二是要使可燃物达到燃烧时所需要的温度。水火不相容,是因为水能灭火。当把水泼到正在燃烧的物体上时,就会变成蒸气,从而降低了燃烧物的温度。同时,这么 “Caves on the cautious,” said: “And the evil and the positive, still water and fire, the original original, may not Sheng.” “Han Jiao Si Jieshi”: “Yi” gossip , Heaven and earth six son, incompatible with water and fire, Ray wind does not run counter to Shan Ze ventilation, and then able to change, both things also. "Fire is the light and flame emitted by the object burning. There are two conditions for burning objects: First, combustible material to contact with oxygen; Second, to make combustible material to achieve the required temperature when burning. Water and fire are incompatible, because water can extinguish fire. When water is splashed on the burning object, it becomes vapor, reducing the temperature of the combustible material. At the same time, so