lit. the old man lost his horse, but it all turned out for the best (idiom) / fig. a blessing in disguise / it's an ill wind that blows nobody any good
the old man lost his mare, but it all turned out for the best (idiom); fig. a blessing in disguise / it's an ill wind that blows nobody any good / also written 塞翁失馬焉知非福|塞翁失马焉知非福