恨铁不成钢

Explanation: Described on the expected people do not live up to expectations not satisfied with progress, he was eager to get better. 　　Usage: Complex sentence; as object, attribute, complement; analogy to expect people to blame are not 　　Source: Qing Cao Xueqin's "Dream of Red Mansions" at 96 back: "gem not only for progress, so often hate him, it was 'turn iron into steel' means." 　　Examples: Jade Jade is not only motivated, so often hate him, but "~" means. (Qing Cao Xueqin, "Dream of Red Mansions" ninety-sixth back) 　　Results: Looking blast stunned 　　Postscript: Looking blast stunned