Wei Yan was a figure in the Three Kingdoms period, in the Romance of the Three Kingdoms, he had a remarkable record in the early stages, and he was also a major general, but later after being introduced to Liu Bei, he was suppressed by Zhuge Liang everywhere, and eventually fought because he and Yang Yi were incompatible, and finally not only was he chased and beheaded by Ma Dai, but even his family did not escape. Wei Yan's ending is indeed unpleasant, but these plots in the middle are still very different in the main history and the novel.
First of all, in the rendition, Wei Yan is still the image of a fierce general, from the first appearance and the first battle of Wen Ping, he shined, and then saved Huang Zhong, captured Ling Bao, defeated Yang Baimadai, and later almost shot Cao Cao, from this series of achievements, Wei Yan's ability is still very strong, and later when he followed Liu Bei to Shu, his performance was also very eye-catching, but after Zhuge Liang took power, his ability was suppressed everywhere, although he was also a vanguard general, but he has been cheating, or it is scolding, Of course, Wei Yan also said that he was a general, and he didn't care to do such a thing, but in the end he still carried out the military order.
As for why Zhuge Liang did this to him, when Guan Yu introduced Wei Wei to Liu Bei and him, he already said that he saw that there was a backbone behind Wei Wei's head, so he would definitely rebel in the future, and he should be beheaded earlier, or Liu Bei persuaded him for half a day to save his life. However, these are the plots in the novel, and there is no such situation in the main history, and even on the contrary, Zhuge Liang is quite protective of Wei Yan. First of all, when Wei Yan defected to Liu Bei, Liu Bei was a master who had nothing, and he could come to him with his own arms, which showed that his vision of people was still OK, and then of course he was reused, which could be seen on many occasions.
When Liu Bei was proclaimed emperor, Wei Yan was made the general of Zhenbei, and then when he followed Zhuge Liang to Shu, his position was also promoted step by step, not to mention small details, that is, the promotion of these official positions is enough to see that Zhuge Liang never suppressed or guarded against him. Not only that, Zhuge Liang also took great care of Wei Yan's personal life, Wei Yan was not originally a reader, so he lacked a lot in terms of dealing with people, and many people had contradictions, in the "Romance of the Three Kingdoms", his description was even more to the point where everyone respected and stayed away, but for his contradictions with others, Zhuge Liang has always been intentionally biased.
In fact, he knew that Wei Yan was the same as himself, so later when he was seriously ill and ordered people to retire from the army, he only said a sentence of "If Yan does not obey the order, the army will be spontaneous", which does not mean that Wei Yan has a rebellious mentality. Therefore, Zhuge Liang still cherished Wei Yan.