魏徵
Kou Zhun became a "jinshi" after passing the imperial examination in 979. Kou Zhun was a great speaker and had a reputation of offering criticism as he saw fit. Once, Emperor Taizong got offended and decided to leave, but Kou Zhun grabbed his robe and forced him to sit down and finish listening. Emperor Taizong remarked, "Having Kou Zhun is like Emperor Taizong of Tang having Wei Zheng."