Bole (Po-le; simplified Chinese:伯乐; traditional Chinese:伯樂; pinyin:Bólè; Wade–Giles:Po-le) or Bo Le was a horse tamer in Spring and Autumn period, and the honorific name of Sun Yang (simplified Chinese:孙阳; traditional Chinese:孫陽; pinyin:Sūn Yáng; Wade–Giles:Sun Yang), who was a retainer of Duke Mu of Qin (r. 659-621 BCE) and a famous judge of horses. Bole was the legendary inventor of equine physiognomy ("judging a horse's qualities from appearance").