During Zhuge Liang's Northern Expedition, he ordered the four generals Wei Yan, Zhang Ling, Chen Shi, and Du Qiong, with 20,000 soldiers and horses, to advance towards Jigu. However, Wei Yan and Chen Shi did not listen to Zhuge Liang's orders and forcibly marched into the army, resulting in the defeat of the soldiers, not only violating Zhuge Liang's orders, but also speaking out in a bad way, openly making fun of Zhuge Liang for not using troops.
It is worth noting that after the defeat of Chen Shi and Wei Yan, Zhuge Liang held the soldiers responsible for the defeat, only punished Chen Shi and killed Chen Shi, but did not pursue Wei Yan's responsibility. Why would Zhuge Liang do this?
At that time, when The four generals Wei Yan, Zhang Ling, Chen Shi, and Du Qiong set out, Zhuge Liang was not at ease and specially sent Deng Zhi to remind them, but Wei Yan and Chen Shi did not listen, and also openly laughed at Zhuge Liang, chen shi said that if Zhuge Liang was careful, how could he lose the street kiosk? And Wei Yan directly ridiculed Zhuge Liang and said, If you had listened to me earlier, sent troops to meridian valley, don't say Chang'an, even Luoyang would have been attacked. Chen Shi said directly, we will send troops to Jigu Valley, go to the Qishan Village, and when the time comes, will we be ashamed to see xiang xiang?
Chen Shi and Wei Yan, these two people, one singing and one harmony, are like wearing a pair of pants, in front of the generals of the three armed forces, they actually openly laugh at Zhuge Liang, which is simply bold, but when the two people hit the Wei army's plan and lost soldiers, they were dumbfounded.
Chen Shi took five thousand people, encountered an ambush by the Wei army, and in the end, he was defeated and returned, leaving only four or five hundred people. Chen Shi had this responsibility, and Wei Yan also had it, so the two men violated Zhuge Liang's military orders, and according to the regulations, they should be questioned together, but Zhuge Liang spared Wei Yan and only killed Chen Shi.
See the 100th time in the Romance of the Three Kingdoms: but it is said that Kong Ming drove the horse and returned to Qishan. After the labor army was finished, Wei Yan, Chen Shi, Du Qiong, and Zhang Ling entered the account to pray for the crime. Kong Mingyue: "Who lost the army?" Yan Yue: "Chen Shi did not obey the order and sneaked into Taniguchi to lose." "Wei Yan taught me to do this." Kong Mingyue: "He saved you, you climbed him!" The order has been violated, needless to say! That is, the samurai launched the Chen style slash. Hang your head in front of the tent to show the generals. At this time, Kong Ming did not kill Wei Yan, and wanted to stay behind for later use.
Zhuge Liang has always had strict laws and clear rewards and punishments, so why would he do this?
In fact, Zhuge Liang also had no way, his generals did not listen to orders, openly made fun of the commander of the three armies, in fact, he also wanted to punish Wei Yan, kill Wei Yan, and replace it with anyone who could not bear it, but Wei Yan was a brother of the Shu Han regime at this time, he was the pillar of Optimus Prime, and the building of Shu Han still had to rely on Wei Yan's pillar to support it, if Wei Yan was killed, Shu Han would almost find a general like Wei Yan, how could Zhuge Liang be willing to kill Wei Yan?
And Chen Shi's military ability was average, killing him would have no loss to Shu Han, so Zhuge Liang had to find Chen Shi as a scapegoat.
Zhuge Liang let Wei Yan go, in fact, there is another point, but also want Wei Yan to understand in his heart, I gave you face, you have to follow me with a dead heart, let Wei Yan be grateful to Dade.