Sima Yi told anyone to go back to Chengdu and spread rumors that Zhuge Liang had a grudge against him and wanted to be emperor, forcing Zhuge Liang to be recalled to Chengdu.

Schumann Gouan was punished by Zhuge Liang for his mistakes, so he held a grudge and betrayed Wei Ying. Sima Yi said to him, "You can go back to Chengdu and spread rumors that Zhuge Liang bears a grudge and wants to be emperor sooner or later, so that your master can recall Zhuge Liang. This is a great contribution to you." Gouan agreed, went straight back to Chengdu, met the eunuch, and spread rumors that Zhuge Liang was independent and would usurp the country sooner or later. When the eunuch heard that he was frightened, he went in and told the emperor. Hearing this, the late master panicked and repeatedly said, "It seems so. What can I do?" The eunuch said, "We can recall Chengdu, cut its military power and avoid its rebellion." As expected, the late Lord ordered Zhuge Liang to move troops back to the DPRK. After receiving the imperial edict, Zhuge Liang looked up at the sky and sighed, "Your master is young, and there must be officials around him. I was about to set up a career when I was suddenly recalled! If I don't come back, I will be deceiving God. If it is ordered to retreat, this northward advance will be destroyed. " Had to retreat. Zhuge Liang returned to Shu and traced the reason, only to know that Gou An was spreading rumors. Urgent arrest, Gou An has gone to Wei.