No flower blooms for a hundred days - even when life is at its brightest you should stay humble.
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history
A proverb crystallized in Yuan-Ming vernacular theater and fiction; the Ming-Qing household anthology 《增广贤文》 pairs it as 人无千日好, 花无百日红 - 'no one has a thousand good days; no flower blooms red for a hundred.' It is widely read as meaning 'good times do not last long.'
usage
Almost always quoted with its twin 人无千日好. The pair is folk wisdom about the impermanence of fortune - often used as consolation, occasionally as a warning against overconfidence.
