智瑶 / Zhi Yao
智瑶 / Zhi Yao appears in 《资治通鉴·周纪》04｜豫让 为智瑶复仇 as the defeated Jin power-holder whose failure lets 司马光 state the episode’s 才德之分 lesson. The source says Zhi Yao did not lose because he lacked ability; he lost because his talent exceeded his virtue.
After the Battle of Jinyang, Han, Zhao, and Wei divide Zhi territory. The episode uses Zhi Yao’s death and 赵无恤’s use of his lacquered skull as a drinking vessel to make 豫让’s revenge both a political aftermath and a personal honor story.