"Those who are satisfied are happy, and those who do nothing are natural." Good wine and good food are not really delicious, but really delicious only in that simple tea and light rice; Luxurious residence and clothes may not bring you happiness. People are always happy when they are satisfied with things. Too much greed often leads to nothing. If you are not insatiable, your mood will naturally calm down. Everything is measured, and everything is enough. Keeping a pure and simple heart is the secret of a happy life.