In 219, Guan Yu was attacked by Lu Xun in the Battle of Xiangfan, and finally lost Maicheng and was killed by Sun Quan. Guan Yu's fall was a great loss for Shu Han, he was able to fight a good battle, he was an excellent warrior, and many people also wanted to recruit him and make him serve himself, but why did Sun Quan finally kill him, didn't Eastern Wu have anyone with vision?
The answer is indeed. First of all, at this time, Zhou Yu, Lu Su and other generals of Eastern Wu had died a long time ago, and none of the remaining people had a long-term vision. Sun Quan was actually hesitating whether to kill Guan Yu at that time, and he also thought about making Guan Yu loyal to him, but none of his men were willing to intercede for Guan Yu, and also used Cao Cao as an example to persuade him that Cao Cao did not kill Guan Yu at the beginning, and was flooded by Guan Yu's Seventh Army in the later battles, if Guan Yu was let alive, there would be endless troubles.
Secondly, because Guan Yu was proficient in the army and water army at that time, controlling the two major strategic centers of Xiangfan and Jiangling was a major obstacle to Eastern Wu, and Sun Quan was also worried that Guan Yu would come back to seek revenge in the future, which would be detrimental to himself. Killing Guan Yu, you can control Xiangfan and Jiangling, and you can also absorb his army, such an opportunity, I am afraid there will not be a second time, so Sun Quan killed Guan Yu, which is more beneficial than harmful to Eastern Wu. After all the consideration, Sun Quan killed Guan Yu.
After Guan Yu's death, Liu Bei, as his brother-in-law, mobilized a national force to attack Eastern Wu, and the Battle of Yiling broke out. In fact, this war Sun Quan had long anticipated, after all, Guan Yu's relationship with Liu Bei was not ordinary, but compared to killing Guan Yu and causing losses in this war, the benefits that Sun Quan's side could obtain were also greatly increased.