What was Liu Bei doing when Cao Cao went west to Zhang Lu?

At the end of the Eastern Han Dynasty, the heroes competed for the Central Plains. Among them, for Zhang Lu, although not a powerful vassal, Zhang Lu has been independent in Hanzhong for more than 30 years. I think this is a vassal who lived for a long time in the last years of the Eastern Han Dynasty. In the second year (19 1), Ada appointed Zhang Lu as the overseer of Sima Yi, and led another department of Sima Yi to defeat Su Gu, the satrap of Hanzhong. After Zhang Xiu killed Su Gu, Zhang Lu killed Zhang Xiu and robbed the soldiers. ?

Then, according to the meaning of Ada, he cut off Xiegu Road and killed the messenger of the imperial court. In the first year of Xingping (194), Ada died and his son Liu Qiang succeeded to the throne. With the break of the two men, Zhang Lu began to divide his forces in Hanzhong. ?

In the twentieth year of Jian 'an (2 15), Cao Cao led a hundred thousand troops to the western expedition to Hanzhong and Yangpingguan, and Zhang Lu wanted to surrender Cao Cao. But Zhang and Zhang Qian didn't listen and led tens of thousands of troops to defend Yangpingguan, which was breached by Cao Cao. Zhang Lu heard the news and immediately surrendered to Cao Cao. In addition, Cao Cao also occupied the land in Hanzhong. As we all know, Hanzhong is the gateway and throat of Yizhou. After Cao Cao got Hanzhong, Liu Bei was in danger in Yizhou. In other words, his own door was captured by Cao Cao. ?

There is no love and hate for no reason in the world.

In 2 15, Zhang Lu in Hanzhong sadly found himself in the jaws of death. One is Cao Cao, like a tiger, the other is Liu Bei, like a wolf. He held it piteously and looked around. He knew he had to make a choice. Otherwise, if you drag on, you will be torn by this tiger!

Yanmo Garden, the counselor around Zhang Lu, had already understood everything, but he ran to the west and had to face Zhang Fei in the lottery. A year ago, after Liu Bei captured Xichuan, he set fire to let Zhang Fei win the lottery, because this place is the central checkpoint of Micang Road and one of the throats for Hanzhong to enter Xichuan.

Obviously, Zhang Fei was sent by Liu Bei to guard against Zhang Lu. Now that Liu Bei knew about Zhang Lu, he was fanned to Bazhong by Cao Cao and immediately sent Huang Quan to meet him. Before Huang Quan came, the angel of Cao Cao came. Both sides are painting a pie for Zhang Lu, releasing goodwill!