Lu people are famous for their bravery and good fighting skills. Duke Lu admired him very much and appointed him as a general to fight against Qi. Unexpectedly, all three wars were defeated, and Lu was afraid of public hazards, so he quickly negotiated for peace. But I don't blame Cao Mo, I still regard him as a general.

Promised to form an alliance with Lu in Kedi. Just as Duke Zhuang of Lu and Duke Huan were preparing to reach a humiliating agreement, Cao Mo rushed over with a dagger in his hand and hijacked Qi Huangong. Huan Gong was afraid of hurting his master and didn't dare to do anything. Duke Huan asked, "What do you want?" Cao Mo said, "Your bullying has gone too far. What do you think we should do, your majesty? " Duke Huan was forced to promise to return all the land occupied by Lu. After being promised, Cao Mo put down his dagger and stood among the ministers again, his face unchanged and his words remained the same. Huan Gong became angry from embarrassment and wanted to break his word. He was stopped by Guan Zhong. As a result, all the land lost by Cao Mo in the Third World War was returned.

With loyal courage and immortal tongue, Cao Mo not only regained the land, but also saved his life, which is remarkable.