Five-flavor entries

Also five entries. The viscera entered, i.e., acted upon, by sour, bitter, sweet, acrid, and salty agents. Plain Questions (素问 sù wèn) states, The five-flavor entries are: sourness enters the liver; bitterness enters the heart; sweetness enters the spleen; acridity enters the lung; saltiness enters the kidney. Thus, for example, sour medicinals may be used to treat, or conduct the action of other medicinals to treat, disease of the liver or of liver channel.