Symptoms of deficiency fire include heat in the hands and feet, hot flashes in the afternoon (a burst of heat), heat in the heart (irritability and sultriness), night sweating (abnormal sweating after going to sleep, and stopping sweating after waking up), zygomatic redness (reddish color of cheeks and zygomatic bones), dry mouth, a fondness for cold drinks, spermatorrhea, and a fine pulse (a pulse that becomes narrower and finer, and at an accelerated rate), and so on. Fire is divided into real and virtual fire, virtual fire, as opposed to real fire, belonging to the real yin loss, physical weakness and manifestation of yin deficiency, yang bias hyper, all belong to the virtual fire, mostly in the heart, liver, kidneys, stomach, lungs and other internal organs. 1. Heart yin deficiency: manifested in the heart, hot, mouth and tongue sores, zygomatic red and so on. 2. Liver yin deficiency: manifested as low menstrual flow, dry eyes, claws and nails withered. 3. Kidney yin deficiency: manifested as bone vapor and tidal fever (a burst of heat, feeling that the heat comes from inside the bone to the outside), tinnitus, spermatorrhea, premature ejaculation, amenorrhea and other symptoms. 4. Stomach Yin deficiency: manifested as thirst, dry throat, bad breath, swollen and painful gums, or even bleeding gums, hunger, and so on. 5. Lung Yin deficiency: manifested as dry cough without sputum, or sputum with blood, shortness of breath, hot flashes and night sweats. If the symptoms of deficiency fire, go to the hospital in time to treat, identify the evidence and use medication, do not take medication without authorization, so as not to delay the condition.