小洞不堵，大洞难补 (小洞不堵，大洞難補) xiǎo dòng bù dǔ, dà dòng nán bǔ

xiǎo dòng bù dǔ, dà dòng nán bǔ phrase If you don't plug the small hole, the big hole will be hard to repair; A stitch in time saves nine.
Domain: Proverb 谚语
Notes: (CC-CEDICT '小洞不堵，大洞難補')