他山攻错

Explanation: Metaphor to take the strengths of others, to remedy his shortcomings. 　　Source: "Book of Songs Xiaoya Heming" Stones from other hills, can be wrong. " 　　Examples: By ~ the capital, _set_ the world traffic of interest, eagerly look forward to Jing yak, do not stingy Jin! (Qing Zeng Pu, "Flower" Eighteenth back) Thesaurus:  overcome one's mistakes by learning from others' mistakes