Liu Bei desired to avenge Guan Yu and take back Jing Province, so he made preparations for war against Sun Quan. When Zhao Yun, a veteran general under Liu Bei, tried to dissuade his lord from going to war with Sun Quan, Liu Bei ignored him. Later, when Liu Bei launched the campaign against Sun Quan, he did not bring Zhao Yun along and instead left him behind to guard Jiangzhou. Qin Mi, an official under Liu Bei, also advised his lord against going to war with Sun Quan but ended up being thrown into prison.