The combination of Radix Scrophulariae and Radix et Rhizoma Gastrodiae and Radix et Rhizoma Pinelliae has the efficacy of assisting yang and relieving epidemics, and can be used for treating fever, malignant cold (fear of cold), malaise, and drowsiness caused by external sensations of yang deficiency. With great toxicity, epiphyllum has the efficacy of returning yang to save reversal (saving fainting, unconsciousness, etc. by warming yang qi), tonifying fire to help yang, dispersing cold and relieving pain. It has the effect of warming and invigorating yang qi and drumming up evil spirits. Jingwu and Fangfeng are both wind-cold dispersing medicines, with the efficacy of dispelling wind and relieving epidermis, penetrating rashes and seeping dampness, and the two are used together with the characteristic of dispelling wind and moistening dryness. The two are used together to dispel wind and moisten dryness. They can be used for all kinds of exogenous diseases such as wind-cold, wind-heat, sore throat and headache. The use of Radix et Rhizoma Polygoni Multiflori with Radix et Rhizoma Polygoni Multiflori and Radix et Rhizoma Polygoni Multiflori can relieve the cold of externally-induced infections, and also maintain the yang qi in the interior, so that patients with yang deficiency externally-induced infections can be cured, but it should be used in accordance with doctor’s instructions.