In the Romance of the Three Kingdoms, Xu Shu's chapter is written, which tells that Xu Shu had to defect to Cao Cao because his old mother was captured by Cao Cao. Liu Bei and Xu Shu did not give up on each other, and recommended Zhuge Liang for Liu Bei. Subsequently, after Xu Shu arrived at Cao Ying, he refused to serve Cao Cao and never gave advice again. Because of the well-known "Romance of the Three Kingdoms", many people thought that Xu Shu was Liu Bei's most reliant strategist before Zhuge Liang left the mountain, but in fact, when Xu Shu did not leave Liu Bei, Zhuge Liang was already out of the mountain. Moreover, when Xu Shu left Liu Bei, it was the time of life and death of the Liu clique. At that time, Liu Bei was hunted down and killed by Cao Cao all the way, and he couldn't even take care of his wife and children.
But you can't throw your wife and children away, at that time, when Zhao Zilong, who was called "Zilong is a guts" by Liu Bei, was going to go back to save Ah Dou, someone told Liu Bei that Zhao Yun, who had followed you for so long, was going to surrender to Cao Cao. In addition to Guan Zhang, Zhao Yun was probably Liu Bei's most trusted general, and even Zhao Yun had to surrender to Cao Cao, which showed how dangerous Liu Bei was at that time. Unfortunately, The military master Xu Shu, whom Liu Bei particularly relied on, was Cao Cao, who surrendered at this time. Liu Bei defected to Cao Cao when he was in danger, so it seemed somewhat disgraceful, and Luo Guanzhong pushed forward the time point of Xu Shu's surrender to Cao Cao in order to whitewash Xu Shu, and Liu Bei was not in danger at that time. Since he defected to Cao Cao, Xu Shu still left an allusion that was "Xu Shu entered Cao's camp and did not say a word"
This is an era when all parties are eager to find talent and recruit wise men. As one of the three major forces at that time, Cao Cao's thirst for talents was also very urgent. The poem "Zhou Gong Spits and Feeds, the World Returns to the Heart" has become Cao Cao's golden sign of loving talents. And Xu Shu was a strategist obtained by Cao Cao by extreme means, that is, Xu Shu was forced to submit to Cao Cao, but Xu Shu was in Cao Ying's heart in Han. This was Cao Cao's disrespect, if he was punished for Xu Shu's lack of advice, smashing the sign of his love talent. I would like to ask, if you will be punished for not contributing, who would dare to defect to Cao Cao? In this way, not only will he not be able to get Xu Shu's loyalty, but he will also be despised by the whole world.
Most importantly, when Xu Shu entered the Cao camp, he could not give Advice to Liu Bei. If he weakens his opponent, he strengthens himself. For Cao Cao, as long as Xu Shu was not used by Liu Bei and was not his enemy, it would be a great help. Cao Ying has a lot of talented people, and there will be no one because of the lack of Xu Shu. Although Xu Shu is resourceful, as the saying goes: "A twisted melon is not sweet." Xu Shu did not have the heart to offer advice to Cao Cao, forcing him to say, and not necessarily being able to make very useful suggestions. In addition, although Xu Shu did not contribute to Cao Cao, this does not mean that he did not contribute to the Cao Wei Group. You know, Xu Shu was finally an official in the imperial history, and Cao Cao was not stupid, and it was impossible for someone who did not contribute to reach such a high position. Xu Shu can be regarded as a generalist, even if he is not a strategist, an ordinary official or something, he will not do too badly.
Also influenced by the Romance of the Three Kingdoms, people generally believe that Xu Shuzhong and Liu Bei were coerced by Cao Cao and were unwilling to give advice to Cao Cao. In fact, the historical facts are just the opposite, Xu Shu also wanted to perform well when he went to Cao Cao. But Cao Cao was really a fierce general like a cloud, a strategist like rain, and a lot of talent, and there was no Liu Bei who appreciated himself like this, it was really not easy to mix. On the other hand, Xu Shu was only a military master of Liu Bei, who was weak and weak, and his fame was far inferior to that of Xun Yu and Guo Jia, and Cao Cao wanted to buy off people like Guan Yu. Therefore, it is concluded from this that it is not that Xu Shu does not say a word, but that he simply cannot squeeze into the core of power and loses the right to speak. It was precisely for this reason that many years later, when he heard that Xu Shu was not reused by Cao Cao, Zhuge Liang could not help but feel sorry for him. Because Xu Shu and Zhuge Liang assisted Liu Bei together, their status was definitely higher than this. In the middle of the capture of Yamato, Zhuge Liang came out of long right, Wen Yuanzhi and Guangyuan Shicai, and sighed: "Wei Shu duoshi evil!" Why don't the two of them see the use? "From the beginning of Xu Shu's departure from Liu Bei, the most beautiful history of Xu Shu's life is about the end.