Cardamom refers to a woman who is thirteen or fourteen years old. Also used to refer to thirteen to twenty years old. From Du Mu's "Farewell" poem: "The flowers are more than thirteen, and the cardamom is in the first two months." There is also logistics: the woman is fifteen years old. (The Book of Rites: "The woman died in five years." ) 16 years old is the flower season, and 17 years old is the rainy season.