Smart people don't fall in love.

Iron pot only stews geese. Love is sad, and the goose warms my stomach. On the surface, the phrase "smart people don't fall in love and stew geese in iron pot" means that smart people don't fall in love and stew geese in iron pot. Here, "goose" is used to describe a warm or comfortable state, suggesting that even without love, the wise can find other things that make them feel warm. The sentence "Love is sad and sad, and the goose warms my stomach and warms me" means that love will bring sorrow and sadness, and the goose can not only warm my stomach, but also warm my whole person. Here, through the metaphor of "goose", the physical and psychological warmth is in sharp contrast with the pain caused by love.