In 194, in order to capture Xuzhou, Cao Cao sent troops to attack Xuzhou in the name of avenging his father, when Xuzhou Mu Taoqian could not resist Cao Cao's attack, he had to ask For help from Shi Tiankai of Qingzhou, and tian Kai learned of the news and immediately went to Xuzhou with Liu Bei for reinforcements. Although Liu Bei's forces were insufficient at that time, and he was defeated by Cao Cao in the process of blocking Cao Cao, because Zhang Mi and Chen Gong betrayed Cao Cao and greeted Lü Bu, which led to Cao Cao's fall in yanzhou, Cao Cao could only transfer the army back to Yanzhou, and the siege of Xuzhou was lifted. After that, Liu Bei stayed in Xuzhou and garrisoned Xiaopei for Tao Qian to resist the invasion of foreign enemies.
Soon after, Tao Qian became seriously ill, and before his death, he told Mi Zhu that only Liu Bei could stabilize Xuzhou, so after Tao Qian's death, Mi Zhu led the people of Xuzhou to welcome Liu Bei as the Taishou of Xuzhou, and Liu Bei took Xuzhou Mu himself under the repeated persuasion of Chen Deng, Kong Rong, and others. It has to be said that this is the beginning of Liu Bei's transformation from a guest to a prince. However, not long after the good days, Liu Bei's base area was lost. At that time, Yuan Shu led an army to attack Liu Bei, and Liu Bei could only take Guan Yu with him on a personal expedition and leave Zhang Fei to sit in Xia Pi, but during the confrontation between Liu Bei and Yuan Shu's two armies, Lü Bu secretly attacked Xia Pi, defeated Zhang Fei, and occupied Xia Pi. Liu Bei, who reflexively returned, completely lost the base area of Xuzhou. Soon after Tao Qian ceded Xuzhou to Liu Bei, Xuzhou was occupied by Lü Bu, and Liu Bei lost Xuzhou as a result, so Xuzhou was lost because of Zhang Fei?
In fact, although Liu Bei lost Xuzhou and Zhang Fei had a certain relationship, Xuzhou was not just lost because of Zhang Fei, and the reason why Liu Bei lost Xuzhou was mainly because Xuzhou could not be defended. It should be known that at that time, Chen Qun already saw that Xuzhou could not be defended, so he would persuade Liu Bei not to take xuzhou, and this was indeed the case, perhaps for this reason, Chen Qun would leave Liu Bei and defect to Cao Cao.
The reason why Liu Bei could not defend Xuzhou, on the one hand, was because there were too many strong enemies around him, at that time, whether it was Yuan Shao, Yuan Shu or Cao Cao, they had been coveting Xuzhou for a long time, and they would not give Liu Bei time to joke at all, not to mention that Liu Biao suddenly became a state pastor from a guest, the span was too large, he did not have much ability, and there were not many capable people who could help him govern Xuzhou. The most crucial thing is that there are not many powerful people in Xuzhou who obey Liu Bei, although there are Mi Zhu and Chen Deng and others who support Liu Bei, but Cao Bao and others are very repulsive to Liu Bei, which is why there is collusion with Lü Bu and collusion with Yuan Shu.
The author believes that Tao Qian left Too little time for Liu Bei, so that Liu Bei could not completely digest Xuzhou, so the loss of Xuzhou at that time could not only blame Zhang Fei.