Revelation: Although poetry only comes from the "rain" road, it is full of philosophy. People can't just see one side of things (such as rain) and can't see the other side ("rain" on sunny days). As soon as the poet changes the subject, these two sentences give people a deeper philosophy.
(2) Imagination: We think of Tao Qian from "Touching Clothes". After he made up his mind to return to his old job, he set out to do it and was willing to do it. "The southern hills grow beans and the grass is full of bean sprouts", but he goes out early and returns late, and Mu Feng bathes in dew, and his clothes are probably wet for dozens of times, but his ambition does not change. Therefore, no pains, no gains, and nothing can be achieved with a little taste.