Xiehouyu is a kind of Chinese proverb consisting of two elements: the former segment presents a novel scenario while the latter provides the rationale thereof. Wikipedia

A kind of Chinese proverb consisting of two elements: the former segment presents a novel scenario while the latter provides the rationale thereof. One would often only state the first part, expecting the listener to know the second. Compare English "a stitch in time (saves nine)" or "a bird in the hand (is worth two in the bush)". Wiktionary

Certain kind of Chinese proverb. Wiktionary (translation)