Huan Fan

Huan Fan (died 249), courtesy name Yuanze (元則), was a minister of the state of Cao Wei during the Three Kingdoms period. Huan Fan became very close to that of Cao Shuang and later earned the nickname "Font of Wisdom". At one time Huan Fan counseled Cao Shuang to fight onward rather than to surrender to Sima Yi. However, through very logical means Huan Fan's counsel ultimately fell on deaf ears.