The difference between real fire and imaginary fire lies mainly in the different causes and manifestations of the two. Real fire is mostly caused by hyperthermia, which can be manifested as dry mouth, bad breath, mouth and tongue sores, dry stools, etc.; while the deficiency fire is mostly caused by Yin deficiency, which is mainly manifested as five heart heat (two hearts and two feet of the heart is hot, and self-consciousness of the heart and chest heat), zygomatic red (cheeks and zygomatic bone color reddish) and so on. Solid fire is mostly caused by hyperthermia, mostly involving the liver and gallbladder, stomach and intestines, and heart, etc. If the liver and gallbladder are ablaze, they are prone to irritability, dry mouth and bitter mouth, etc.; solid fire in the stomach and intestines is prone to bad breath, dry mouth and thirst, easy to eat and easy to starve, and dry stools, etc.; ablaze fire in the heart is prone to heartburn, insomnia, and sores in the mouth and tongue. Deficiency fire is mainly due to the deficiency of yin can not restrain yang qi, thus showing a deficiency of yin and fire (deficiency of yin and essence in the body, the emergence of hyperactive deficiency fire) of the evidence, mostly related to the deficiency of kidney yin, the main manifestations of emaciation, dry mouth and pharynx, heartburn, zygomatic red, night sweating (abnormal sweating after going to sleep, waking up sweating stops) and lumbar and knee soreness and tenderness (lumbar and knee soreness and weakness of the sensation) and so on. In addition, Solid Fire is mostly seen in people with strong and solid physique, while Deficiency Fire is mostly seen in people with emaciated form or chronic illness, whose treatments should be carried out under the guidance of physician’s diagnosis.