Zhuge Liang was the chancellor of the Shu Han Dynasty, and his lifelong ambition was to support the Han Dynasty and return to the old capital. When Liu Bei was in Sangu Maolu, Zhuge Liang formulated a strategic policy for him, as long as he followed this step, he would certainly be able to restore the Han Dynasty. In the following decades, Zhuge Liang followed Liu Bei in his southern conquest of the Northern War, occupying Jingzhou and taking Yizhou, and dividing the world into three parts. However, fate made a joke to Zhuge Liang.

Guan Yu carelessly lost Jingzhou, making the original Longzhong pair a bubble. Zhuge Liang could only fight unilaterally, sending troops from Hanzhong to take Chang'an. After Liu Bei's death, Zhuge Liang made six Northern Expeditions, but for various reasons, the Northern Expedition failed. In 234 AD, Zhuge Liang became ill from overwork and died on the Wuzhangyuan. Before dying, Zhuge Liang still had the great affairs of Shu Han in mind.
Zhuge Liang left a six-character mantra before his death, but the Shu Han would not perish. Zhuge Liang summed up the reason for the demise of the Han Dynasty, because the Second Emperor Huanling favored the traitors and stayed away from the sages, which led to great chaos in the world. Therefore, Zhuge Liang said to Liu Chan, "Pro Xianchen, far lesser", he was worried that Liu Chan did not know which people were Xianchen, and he specially recommended several to him, such as Jiang Huan, Dong Yun, Fei Yi, and so on.
After explaining the matter of Shu Han, Zhuge Liang died. However, Liu Chan did not remember "pro-xianchen, far lesser", but instead remembered "pro-villain, far-reaching sage". Liu Chan reused Chen Qi, Huang Hao, and other traitors to put them in charge of Shu Han, which resulted in shu Han people not having a good life. Playing with the government internally, restraining Jiang Wei externally, and when Deng Ai attacked Chengdu, Huang Hao also asked Liu Chan to surrender.
The Jiangshan that Liu Bei and Zhuge Liang had worked so hard to build was thus destroyed by Liu Chan. For the demise of Shu Han, Liu Chan only wants to say one sentence, Xiang Father, I remember the opposite.