In the Romance of the Three Kingdoms, before the battle of Guandu, Cao Cao was worried that Sun Ce would sneak up on his rear when he was fighting Yuan Shao at the front. Later, Guo Jia advised Cao Cao, "Although Sun Ce is brave, he is young and frivolous, and he is impatient. He has no defense against the people around him, and he will definitely be killed by the little people around him."

In fact, after Sun Ce captured Jiangdong, he killed many people with prestige in the local area. This fully illustrates Guo Jia's unpredictable events.