Misfortune depends on happiness, and happiness lies in misfortune: from Chapter 58 of Laozi: "Misfortune depends on happiness, and happiness lies in misfortune." It means that misfortune and happiness are interdependent and can be transformed into each other. Metaphor means that bad things can have good results, and good things can also have bad results.

On the dialectical relationship between fortunes and gains and losses, China made a brilliant summary of many famous sayings, such as:

An old pioneer lost his horse-a blessing in disguise is a blessing in disguise.

Unfortunately, it may be a blessing in disguise.

There is always a ray of light behind the dark clouds, and joy begets sorrow. (blessing and misfortune conversion)

A lot of things have happened.

What we lose in hake we shall have in herring. (initial loss and final gain)