The ruler is shorter and the inch is longer; the spring silkworms will not run out until they are dead, and the wax torch will turn into ashes and tears will not dry up.

The ruler is short and the inch is strong; use strengths and avoid weaknesses. The short ruler also shows that no matter how powerful a person is, there will be shortcomings. The strengths of the inch remind people to be good at discovering their own strengths. Even stupid people have their own merits; people praise their noble spirit of obscurity and selfless dedication with the saying: "Spring silkworms will die only when their threads are gone, wax torches will turn to ashes before their tears dry up." Although the life of a candle is short, it brings light to people during the power outage, and its life is meaningful.