Later the emperor pursued him and again respectfully requested that Xǔ Yóu reconsidered. Xǔ Yóu got up abruptly and went to the nearby river to wash his ears.
* * * * *
The ancients had such high standards for purity. It is inconceivable that Xǔ Yóu deemed necessary to go wash his ears when hearing about the fame and profit proposal from the emperor.
Furthermore, Cháo Fǔ was so pure that he would not let his own buffalo get smeared.