Hello! The original words of this sentence are: "misfortune, happiness, happiness." Refers to the interdependence and mutual transformation of blessings and disasters. Metaphor means that bad things can have good results, and good things can also have bad results.

"Misfortune comes from the mouth, happiness comes from the mouth, and disaster comes from the mouth." This statement has a certain dialectical ideological connotation, because dialectical materialism (hereinafter referred to as materialist dialectics) usually talks about "contradiction" ("unity of opposites"), and Laozi said: "Misfortune is a blessing, and happiness is hidden." What we are talking about is contradiction, which is also the contradiction of unity of opposites. "Misfortune" makes people sad and "luck" makes people happy, so "misfortune" and "luck" are contradictory. However, "misfortune" may make people learn a lesson and produce "happiness", and "happiness" may make people extremely sad and produce "misfortune", so "misfortune" and "happiness" are a unified contradiction.

From: Chapter 58 of Laozi: "Misfortune is a blessing; Blessed, cursed. "