Cao Hong
A different and likely fictional version of how Sima Yi came to join Cao Cao's administration originally comes from a "Weilüe" account where it is stated that Cao Hong, a veteran general serving under Cao Cao, had heard of Sima Yi's talent and wanted to recruit him as an adviser. However, as Sima Yi thought little of Cao Hong, he refused to meet him and pretended to be so ill that he could not move around without using crutches. Cao Hong was so unhappy that he reported it to Cao Cao, who then summoned Sima Yi. When Sima Yi heard that Cao Cao wanted to meet him, he immediately threw aside his crutches and rushed there.