The so-called fire should refer to the state of fire and heat within the state, in order to avoid taking longan to appear heat, can be matched with chrysanthemum, gardenia, lotus heart and other heat-clearing drugs. 1. chrysanthemum: sex bitter cold, has clear heat and detoxification (clears body heat and poisonous evil), evacuates wind and calms liver and so on role, can be used for wind-heat cold, headache and dizziness, sores and carbuncles and swollen toxin and so on disease treatment. 2. gardenia: sex bitter cold, has clear heat and diarrhea fire (clear body heat evil and fire evil) detoxification, cool blood in addition to annoyance, can be used for heat disease heartburn, eye redness and swelling pain, fire poison sores and jaundice and other diseases treatment. 3. Lotus heart: bitter and cold in nature, it has the functions of clearing the heart and tranquilizing the mind (stabilizing the mind by getting rid of the inner heat), astringing the essence and stopping bleeding, etc. It can be used for the treatment of heat into the pericardium (heat evils encroaching on the pericardium), insomnia and spermatorrhea, and vomiting of blood with heat in the blood. Above drugs need to be used under doctor’s guidance, because chrysanthemum, gardenia, lotus heart are bitter cold, so for the spleen and stomach cold (spleen and stomach weak cold) should not be used, if it is used with longan dosage should not be heavy.