expression
sporadic effort yields no result; one day of hard work followed by ten days of idleness
A yojijukugo from Mencius, warning that bursts of effort interrupted by long periods of neglect are futile. Used to emphasize the importance of consistency.
一暴十寒では、どんな才能も開花しない。
With one day of effort and ten days of idleness, no talent can blossom.
語学の勉強は一暴十寒に終わらせず、毎日続けることが大切だ。
In language study, it's important not to let it end up as sporadic effort, but to continue every day.
From Mencius, literally 'one day of exposure to the sun, ten days of cold'. The metaphor illustrates that a plant cannot grow if it is warmed for only one day and then left in the cold for ten, just as sporadic effort cannot produce results.