小洞不補大洞吃苦 [ㄒㄧㄠˇ ㄉㄨㄥˋ ㄅㄨˋ ㄅㄨˇ ㄉㄚˋ ㄉㄨㄥˋ ㄔ ㄎㄨˇ; xiao3 dong4 bu4 bu3 da4 dong4 chi1 ku3] A small hole not plugged will make you suffer a big hole (common saying); a stitch in time saves nine ◄ ►