A person has a close relationship with Cao Cao and has made great contributions on the battlefield. Why did he die because of a joke?

This is because Lou Gui and his son said that today is also interesting. But he forgot that he and Cao Cao are very different in identity. Coupled with Cao Cao's suspicious personality, Cao Cao had a great resentment against him. Therefore, this also made this adviser who had made great contributions to Cao Cao lose his life because of a joke. Have to say, although Lou Gui has a very high intellect, but when getting along with Cao Cao, he didn't make a difference.

Lou Gui was originally Liu Biao's counselor, but later he chose to go to Cao Wei Group. But he also made great contributions to Cao Wei Group, because the feud between Cao Cao and Ma Chao also caused the contradiction between Cao Cao and Ma Chao, but Lou Gui advised Cao Cao at that time. For example, he wrote the famous strategy of casting a city with frozen water in the Romance of the Three Kingdoms. However, it is also sad that a consultant who has made such a great contribution was finally killed because of a joke.

Cao Cao was indeed a very successful monarch, because Cao Cao did not have too strong military strength at first. But later, Cao Cao recruited talented people and further strengthened his own strength. Cao Cao won many battles with Yuan Shao and Lu Bu, which also enabled Cao Cao to unify the Central Plains at that time. But Cao Cao's fiasco in Battle of Red Cliffs later led to the tripartite confrontation among the three countries.

Although Cao Cao cherishes talents very much, he also hates some very perverse people. Because once you violate Cao Cao, you are likely to be killed by Cao Cao. From this perspective, Cao Cao's character is actually very vicious.