Qin Fei Drink, also known as Gancao Ginger Soup, comes from Treatise on Febrile Diseases, a national quintessence with a history of thousands of years. It is based on Gancao Ginger Soup drunk by Zhang Zhongjing, a medical sage in Han Dynasty, and Wu Tang, a famous doctor in Qing Dynasty.
The formula of the beverage consists of six pure drugs: licorice, dried ginger, red dates, dried tangerine peel, mulberry leaves and chrysanthemum.