船到江心,補漏遲 [ㄔㄨㄢˊ ㄉㄠˋ ㄐㄧㄤ ㄒㄧㄣ , ㄅㄨˇ ㄌㄡˋ ㄔˊ; chuan2 dao4 jiang1 xin1 , bu3 lou4 chi2] It's too late to plug the leak once ship is in the middle of the river. (idiom) ◄ ►