What do you mean he can attack jade with stones from other mountains?

A wise man corrects his own mistakes through the mistakes of others. Stones from other mountains can be used to polish jade. It turns out that talents from other countries can serve their own country. People or opinions that can help him correct his shortcomings. The language "The Book of Songs Xiaoya heming": "Stones from other mountains can attack jade." Ming Cheng Deng Ji's "Study in Qionglin" Volume 2: "People's morality is lost, and what they do will win; Stones from other mountains can attack jade. " \x0d\ Explanation: Stones from other mountains can be used to polish jade articles. \ x0d \ x0d \ is a metaphor for people or opinions that can help them correct their shortcomings. \x0d\ Word explanation: Right, right. To: Use it. Attack: think deeply. \x0d\ Idiom usage: combination; As predicate, object, attribute and adverbial. \x0d\ Idiom usage: as subject and object; Refers to something that can be used for reference \x0d\ Idiom structure: compound sentence idiom, eight-character idiom \x0d\ Date of birth: ancient idiom \x0d\ Idiom example: Ming Cheng Deng Ji: In the second volume of "Study in Qionglin", "People lose their morality and are greedy for crimes; Stones from other mountains can attack jade. "