In 228, Zhuge Liang led his army to the Northern Expedition, leaving Li Yan to assist Liu Chan.
Chen Zhuan, Li Yan's subordinate, was spotted by the treacherous minister Huang Hao. Under coercion and inducement, he became an undercover agent of the Wei State.
Huang Hao was Chen Zhuan's superior. He was ordered by Sima Yi to come to Shu to disrupt the imperial court and restrain Zhuge Liang.
And Sima Yi's first plan was to let them destroy Shu's economy and political power.
Zhuge Liang learned of Sima Yi's plan and ordered Princess Liu Yue to investigate the mystery of all this.
(This article is a joke, please don't take it seriously, thank you.)
Intention: Any conspiracy or trick is just a paper tiger in the face of love