이엄
When Zhuge Liang returned to Hanzhong Commandery, he received a letter from Li Yan informing him that the food supply was ready and asking why he had retreated. At the same time, Li Yan sent Liu Shan a memorial which said that "the army feigned retreat in order to lure the enemy to do battle" in the hope that Zhuge Liang would resume the war so his failure to transport rations would go unnoticed. However, Zhuge Liang decided to return to the Shu capital, Chengdu, and show Liu Shan the handwritten letters of Li Yan, so the latter could not deny the fault. At Chengdu, Zhuge Liang asked the emperor to strip Li Yan of all his titles and official posts and exile him to Zitong Commandery.