All kinds of ginseng other than red ginseng are called white ginseng, such as raw sun-dried ginseng, white sugar ginseng and white dried ginseng. The Justice of the Materia Medica states that "white ginseng is rich in nourishing fluid and is the best for tonifying yin". In our country, Liao ginseng and Jilin ginseng are the best white ginseng. White ginseng is sweet and flat in nature, slightly bitter and cold, and it must be used to nourish the disease of gas deficiency and heat phenomenon.