Answer: Yinqiao Powder and Sangju Yin are both pungent and cool external agents. The two prescriptions are composed of five herbs: forsythia, peppermint, platycodon, licorice, and reed root. In terms of efficacy, they both have pungent and cool properties to relieve superficial symptoms and dispel wind and heat. They both treat external wind-heat syndrome.

The difference is: Yinqiao Powder uses honeysuckle combined with Schizonepeta, tempeh, burdock, and bamboo leaves. Its ability to relieve symptoms, clear away heat and detoxify is stronger than Sangju Yin, making it a "spicy and cool medicine". It is mainly used to treat exogenous febrile diseases with severe heat and poison at the beginning. The key points of treatment include fever, slight aversion to wind and cold, sore throat, thirst, and floating pulse. Sangju drink mainly contains mulberry leaves, chrysanthemums and almonds. It has a strong effect on soothing the lungs and relieving coughs. It is a "spicy and cool drink". It is mainly used to treat the symptoms of exogenous wind-heat at the beginning. The disease is mainly cough. The pathogen is mild and superficial, and the body fluid is not seriously injured, so the body is not very hot and the mouth is slightly thirsty.