I gotta learn this phrase of '' 吃一堑，长一智 ''! In the place I live, we have never used (heard) of this phrase but we have a similar and simpler version, that is " 经一事，长一智 ". After all the '堑' isn't a common word at my place.

Wow, so quick! Thank you both, that was very helpful!

吃一堑，长一智，是说：失败一次就有了一次的经验，教训；就有了处理相似问题的能力。

Hi Jack Fancy. So far I can think out is "吃一堑，长一智 (chī yī qiàn,zhǎng yī zhì)". But I believe there is a better one. I would tell you if I figured it out.