《淮南子·修务训》
现在有一种磨去棱边花纹、卷曲了锋刃的宝剑，如果有人声称此剑曾是楚顷襄王佩带过的古剑，那么社会上尊贵人士也必定拿着佩带；现在有一种琴声走调、琴身歪斜破损的琴，如果有人声称此琴曾是楚庄王弹奏过的古琴，那么社会上富贵人家的妻妾就会争着弹奏。
今剑或绝侧羸文，啮缺卷銋，而称以顷襄之剑，则贵人争带之。琴或拨剌枉桡，阔解漏越，而称以楚庄之琴，侧室争鼓之。
Now there is a precious sword with worn-out patterns and curled-up edges, if someone claims that this sword was an ancient sword worn by King Xiang of Chu, then the noble people in the society will definitely wear it; now there is a piano with out-of-tune sounds, crooked and damaged body, if someone claims that this piano was an ancient piano played by King Zhuang of Chu, then the wives and concubines of the wealthy and noble families in the society will compete to play it