Is “In the novel, Man Chong was sent by Cao Cao to deliver a letter to Jiangdong, while the selected passage from the official history records his participation in military campaigns against Guan Yu and Zhou Yu.” true?

In Chapter 73 of Romance of the Three Kingdoms, he is depicted as an envoy: "Cao Cao was greatly pleased, and immediately wrote a letter, ordering Man Chong as envoy to go to Jiangdong day and night to see Sun Quan." The Records of the Three Kingdoms, Book of Wei, Biographies of Zhang, Yue, Yu, and Xu records his military actions: "He also joined Man Chong in attacking Guan Yu at Hanjin, and with Cao Ren attacked Zhou Yu at Jiangling."