他山攻错

比喻拿别人的长处，补救自己的短处。

《诗经·小雅·鹤鸣》：“他山之石，可以为错。”

借～之资，集世界交通之益，翘盼旌旄，勿吝金玉！ 清·曾朴《孽海花》第十八回

[advice from others may help one to overcome one's short comings as stones from other hills may serve to polish the jade of this mountain] 见“攻错”