Among them, after Sun Quan killed one, Guan Yu killed one, and Cao Cao killed one, they all caused very serious consequences.
One; the person Sun Quan killed, the person Sun Quan killed was Guan Yu. Originally, Sun Quan and Liu Bei were allies, and although the combined strength of the two sides could not be compared with Cao Wei for the time being, it was completely enough to compete. However, with Sun Quan's master killing Guan Yu, the two countries of Wu and Shu were completely resentful. It directly buried Sun Quan's hope of unifying the world.
Second; the person Cao Cao killed, the person Cao Cao killed was Hua Tuo. Hua Tuo was a famous doctor in the late Eastern Han Dynasty, and because he did not want to become Cao Cao's personal doctor, he was eventually captured and killed by Cao Cao. As a result, Hua Tuo was in great trouble after his death, and first Cao Cao's beloved son Cao Chong fell ill and could not be cured. Cao Chong eventually died. Later, Cao Cao's head wind disease attacked again, and no one could cure it except Hua Tuo. Therefore, Cao Cao was equivalent to indirectly killing his son and harming himself.
Three; The man Guan Yu killed. The man Guan Yu killed was Pound, originally a Western Liang general and a subordinate of Ma Chao. When Ma Chao defected to Liu Bei, Pound was left in Hanzhong, and later Pound defected to Cao Cao. During the Battle of Xiangfan, Guan Yu was so powerful that he beheaded Pound. However, when the Shu Han Dynasty fell, Guan Yu remained in Chengdu to continue the incense. He was also killed by the Wei general Pang Hui, who was the son of Pang De.