Cao Cao
Cao Cao stayed in Wancheng for more than 10 days after receiving Zhang Xiu's surrender. During this time, he became attracted to Zhang Ji's widow and took her as his concubine. Zhang Xiu, feeling outraged and humiliated, plotted revenge against Cao Cao. Cao Cao heard about Zhang Xiu's unhappiness and he planned to have Zhang Xiu assassinated.