Friends who have read Luo Guanzhong's romance of the Three Kingdoms know that Jiang Gan is a clown figure in the book. Jiang Gan was entrusted by Cao Cao to go to Jiangdong to persuade his former friend Zhou Yu to surrender, but after Zhou Yu refused, Jiang Gan thought that he had obtained the documents for Cao Cao's water army commanders Cai Mao and Zhang Yun to smuggle jiangdong. When he presented the documents to Cao Cao, Cao Cao, in a fit of rage, beheaded the two commanders of the water army, which was foreshadowed by the defeat of the Cao army at the Battle of Chibi.
Luo Guanzhong's Jiang Gan was not only teased once, but also came again, he actually believed Pang Tong's treacherous plan, and recommended Pang Tong to Cao Cao, who presented a serial plan to Cao Cao, connecting the large ships of his own water army with iron rings, providing conditions for Zhou Yu to attack with fire in the Later Battle of Chibi. In Luo Guanzhong's pen, Jiang Gan was the initiator of Cao Cao's defeat at Chibi.
But Jiang Gan in real history and Jiang Gan in the novelist's pen are completely two people. According to the Records of the Three Kingdoms, Jiang Gan, Ziyi, was a native of Jiujiang County at the end of the Han Dynasty. He himself is good-looking, handsome, and can speak the Tao, walking alone between Jianghuai and Huaijiang, and there is no opponent. In the real history, there is indeed a scene in which Cao Cao sent Jiang Gan to Jiangdong to persuade Zhou Yu, and after Jiang Gan was rejected by Zhou Yu, Jiang Gan, who returned to Cao Cao's side, described to Cao Cao that Zhou Yu was so magnanimous and elegant that it was impossible for this person to use a divisive tactic. Cao Cao was also a wise man, and since then he has dispelled the idea of persuading Zhou Yu to surrender.
In the main history, there is no drama of Jiang Gan stealing books, let alone the story of the wrongful killing of Cai Mao, Zhang Yun and others. There is also no mention in the main history that Jiang Gan caught Pang Tong's plan and asked Pang Tong to present a series of plans to Cao Cao. Cao Cao's large army from the north was not accustomed to water warfare, and the plague was prevalent, and it was Cao Cao who took the initiative to connect the big ships. He has no half-cent relationship with Jiang Gan and Pang Tong. In the novel, the burning of Chibi is also more exaggerated, it is really recorded in history that Cao Cao burned his own warships in order to be able to cover the retreat of the army, and it has nothing to do with Zhou Yu's fire attack.