Thinking here means missing. This is the source of missing. Thinking usually follows the source word. (Sirou Building, from the book of songs "Think softly if you want to drink wine")

Taste is to distinguish between taste and taste. It also refers to a certain kind of food, such as seafood, game ... and the material characteristics that can be distinguished by the tongue and nose: sour, bitter, fragrant and smelly ... (The taste is mysterious, from Du Fu's poem) (Taste Garden)