Minister of the state of Wei in the Three Kingdoms period who devised the 九品中正制 (Nine-Rank system), the way officials were chosen until the Sui dynasty brought in the imperial examinations.
He put the system forward in 220, as 曹丕 took power. In practice it came to favour great clans, summed up in the line 上品无寒门,下品无势族: 'no humble families in the top ranks, no powerful clans in the bottom ones'.
culture
One of the "Four Friends of the Heir Apparent" (四友) under Cao Pi, alongside Sima Yi, Wu Zhi and Zhu Shuo. Appears as a stabilizing court figure in 《三国演义》 (Romance of the Three Kingdoms).