Wei Yan has always disobeyed Kong Ming in the "Romance of the Three Kingdoms", and finally died because of conspiracy, playing a very bad role. However, Wei Yan became a problematic figure after Liu Bei's death, but there was never any problem before Liu Bei's death. Liu Bei's reign as King of Hanzhong in 219 was also Liu Bei's heyday. At this time, who to appoint as the Taishou of Hanzhong became a very important question. The so-called Hanzhong Taishou refers to the commander of the northern army, that is, when Shu and Wei enter the war, they must be in the front line, so they have to choose a capable person. At that time, it was generally believed that Zhang Fei should be in charge, and Zhang Fei himself thought so. However, it was Wei Yan who later served as the Taishou of Hanzhong, which surprised everyone.
Wei Yan was quite highly praised here, and he was also quite loyal to Liu Bei, but after Liu Bei's death, he really did not think that this person was good for Kong Ming from Wei Yan's point of view. That is to say, for those who had never been to the front line before the emperor's lifetime, he could not stop the feeling of dissatisfaction.
In the Romance of the Three Kingdoms, there are many scenes of Kong Ming's eccentricity, especially when it comes to Wei Yan. Originally, Wei Yan only followed Liu Bei after the Battle of Chibi, but when he was still a diner at the side of a certain Taishou, due to Liu Bei's attack, Wei Yan killed the Taishou and then surrendered to become Liu Bei's subordinate. At this time, in the Romance of the Three Kingdoms, Kong Ming had said that Wei Yan was a bad character who killed his benefactor, so it was better to kill him, but Liu Bei only responded casually and did not kill him. In this way, at this time, Kong Ming had already seen that Wei Yan had the appearance of rebellion and proposed to kill him, which had always become a volt line in the future. However, what was strange was that the other people before--there were many people who killed the monarch and then defected to Liu Bei-Kong Ming accepted it without saying anything, why did he only have such a claim when Wei Yan was there! If it is to be a volt line for rebellion decades later, it is not too inconsistent, right? So I believe this must have been deliberately arranged.
As time passed, Kong Ming entered the battle with the thirty-fourth Sima Yi. This is the Battle of Hulu Valley, which is the story of the First 103 Times in the Romance of the Three Kingdoms.
In a very narrow valley, he prepared to lure Sima Yi to him—the task of seducing him was to put Wei Yan in charge and then set fire to make it impossible for him to escape. As long as the secret gunpowder was used to detonate it, it could trigger a powerful fire, and when Sima Yi was burned to death, It was also possible to burn Wei Yan to death at the same time. However, at this time, it just happened to rain, so that Sima Yi picked up a life. At the same time, Wei Yan was also saved, so — but this was originally a fictional thing, and this battle did not exist in reality — Wei Yan was very angry, thinking that you knew that I was still in it, and actually set fire to it, didn't you clearly want to kill me? Kong Ming did not pretend that there was no such thing, but that his subordinate Ma Dai— who those who like the Romance of the Three Kingdoms should know who he was — accidentally lit a fire, which was entirely his mistake, and demoted Ma Dai from a general to a soldier.
According to the explanation in this article, Kong Ming originally wanted to solve Sima Yi and Wei Yan together, but he did not expect to fail. When I first read that Ma Dai finally had to run away in a wet suit, I couldn't help but feel overwhelmed, I thought that the strategy in the Romance of the Three Kingdoms was the dirtiest method, and after that I couldn't have a good feeling for Kong Ming, of course, Kong Ming in the Romance of the Three Kingdoms. Therefore, I am inconceived that readers who stand on the side of Kong Ming after reading "Romance of the Three Kingdoms" can still feel respect for it after reading this story. However, the existence of this story varies according to the version, so it may also be added by the editors of later generations. However, no matter which way it is said, Kong Ming in historical facts has absolutely no responsibility. Even if it is biased in the Romance of the Three Kingdoms, does the author have other intentions, which is why this unfair strategic description is there? I'd like to know.