Bulong so
No sharpening, no cut and polish  Not tempered, not carved. Metaphors do not learn, hone. Han Yang Xiong "Saying learning to": "or say: no good school too, such as the quality of what? Said: husband does not think of them now! Husband with knives were Long Zhu, a jade were all wrong, not Long Yes, Yan Yau used. "
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