Why did Liu Bei choose the unknown Li Yan as the minister of Tuogu?

Because he just wants to curb Zhuge Liang's power, and he doesn't want all the power to be controlled by Zhuge Liang, so just find someone at random.

Because Li Yan was the representative of the local forces of Shu at that time, without him, Shu would not be able to run for a long time.

Because Li Yan was a native scholar clan in Yizhou, the local scholar clan in Yizhou was too powerful in Shu Han at that time, and if they were not appeased, they would not support Liu Chan to succeed to the throne.

Because Li Yan's military ability is very good, and he is deeply trusted by Liu Bei, let Li Yan manage the military and can check and balance Zhuge Liang.

Still wary of Zhuge Liang, afraid that his son would be incompetent, Zhuge Liang called the poem a rebellion, and let his Wei State fall into the hands of others, this is to control Wang Yue Zhuze or Ge Liang.

The main purpose is to be able to involve Li Yan and Zhuge Liang and form an opposing situation.

Because Li Yan is very talented, Liu Bei trusts him very much, and Zhuge Liang has other tasks.

Because Zhuge Liang's ten Northern Expeditions all failed, Liu Bei could only let Li Yan manage the military in order to prevent another failure.

Because he didn't fully trust Zhuge Liang and was afraid that Zhuge Liang, who was in power, would be unfavorable to Liu Chan, he handed over the military power to Li Yan and let him form a check and balance on Zhuge Liang.

Li Yan is steady, thinks twice before acting, and he and Zhuge Liang are still compatible, the two can discuss, and there will be no major contradictions.

is because Li Yan and Zhuge Liang are not in harmony, and Li Yan is very loyal, because the relationship between Li Yan and Zhuge Liang leads to the fact that the two of them can check and balance each other, so it is the safest for Liu Chan.

Because Li Yan was loyal and held military power, he and Zhuge Liang were not in the same camp to balance Zhuge Liang, and Li Yan had excellent political ability.

Because Liu Bei values Li Yan, if Li Yan is there, he can also check and balance Zhuge Liang's power.

One is to appease people's hearts, after all, Li Yan's strength is also very influential in Liu Bei's camp, so he was chosen in order to prevent him from having an impact on Shu after his death.

Because Li Yan had been following Liu Bei at that time, Liu Bei knew Li Yan's temperament, so he was very relieved of him.