How a Warlord’s Concubine Triggered a Three-Year War and a Surprising Alliance
When Cao Cao took the widow of a rival as his concubine, he ignited a fierce conflict that cost him his eldest son and his most loyal bodyguard. Yet, through tactical brilliance and political pragmatism, the bitter enemies eventually reconciled, transforming a bloody feud into a decisive military partnership.
The conflict between Cao Cao and Zhang Xiu began in 197, following Zhang Xiu's initial surrender in Wancheng. The peace was shattered when Cao Cao took Zhang Ji’s widow as a concubine, an act that humiliated Zhang Xiu and prompted a preemptive strike. In the ensuing chaos, Cao Cao was caught off guard, losing his eldest son, Cao Ang, his nephew Cao Anmin, and his bodyguard Dian Wei, who died covering his lord's retreat.
The war spanned three years, characterized by shifting tactical advantages and the strategic counsel of Jia Xu. During a 198 campaign, Cao Cao was trapped at Anzhong County by Zhang Xiu and Liu Biao. Cao Cao successfully feigned a retreat, leading Zhang Xiu into an ambush. However, when Zhang Xiu ignored Jia Xu’s advice to stop pursuing, he suffered a defeat, only to win a subsequent counter-attack when Jia Xu correctly predicted that Cao Cao’s officers would be less effective than Cao Cao himself in the rearguard.
The rivalry ended in 199, when Jia Xu convinced Zhang Xiu to defect to Cao Cao rather than the more powerful Yuan Shao. Jia Xu argued that Cao Cao, who acted in the name of Emperor Xian, would value a smaller force more than Yuan Shao would. Cao Cao demonstrated his political acumen by welcoming his former enemy, hosting a banquet, and arranging a marriage between his son, Cao Jun, and Zhang Xiu’s daughter. Zhang Xiu later served under Cao Cao at the Battle of Guandu.
