In 228, Eastern Wu's Poyang Taishou Zhou Qu, following the idea of Sun Quan, the king of Wu, pretended to have offended king Wu and wanted to abandon Wu and surrender to Wei. Cao Xiu then led a total of 100,000 cavalry and infantry to Anhui County to receive Zhou Fang. At that time, the Wei Ming Emperor Cao Rui sent Jia Kui and four other armies to attack Dongguan, and Sima Yi led an army to attack Jiangling, at that time Jiang Ji believed that the Eastern Wu general Zhu Ran might attack from Cao Xiu's rear, and Eastern Wu could also cut off Cao Xiu's retreat at any time, and suggested that Cao Xiu be rescued. In fact, the Eastern Wu side also intended to do this, and at that time, the Lang Evil Taishou Sun Li also advised Cao Xiu not to go deep alone, but this Cao Xiu was earnest and did not listen. He entered Shiting, where he encountered a surprise attack of about 90,000 people from Lu Xun, Zhu Huan, and Quan Chun, and because Cao Xiu had previously been defenseless, he was defeated by Lu Xun and others, although Jia Kui came in time to support Cao Xiu and saved Cao Xiu from the total annihilation of the army, but Cao Xiu suffered great losses in this battle. Afterwards, Cao Xiu felt guilty and died of illness soon after.
In fact, in addition to Cao Xiu, Cao Ren also had such a situation, and in 223 AD, the Battle of Fusukou continued, when Cao Ren led tens of thousands of people to confront the Eastern Wu commander Zhu Huan. At that time, Zhu Huan only had five thousand soldiers and horses in his hands, so he put an end to the banner, disguised himself as weak, and lured Cao Ren to attack. Cao Ren was sure of the plan, and sent his son Cao Tai to raid the city of Fusu, and then sent the general Chang Diao to oversee Zhuge Qian, Wang Shuang and others, and in the morning to attack Zhongzhou in another oil tanker, while Zhu Huan Cao Tai and sent the general Yan Gui to attack Chang Diao and others, resulting in Chang Diao being beheaded, Wang Shuang captured, and thousands of people killed in battle, and Cao Ren died shortly after losing the battle. Cao Xiu and Cao Ren both died shortly after their defeat, was their deaths any catty?
In fact, although all countries have military laws such as "those who lose the army are convicted of crimes, and those who lose are exempted from official titles" or "those who lose the army must be punished", victory and defeat are common affairs of soldiers, and it cannot be said that they will be killed as soon as they lose the battle. Because of this, after the Battle of Chibi, Cao Ren lost Nan County, and it is okay, so it can be seen that at least in Cao Wei, defeat does not necessarily necessarily mean that he will be killed or demoted.
Cao Ren's death is more likely related to the great plague in the park in 233, when the plague broke out in the war zone and Eastern Wu suffered heavy losses, and it is estimated that Cao Wei was not much better, so Cao Ren may have died as a result. As for Cao Xiu's death, there is also a reason, after all, After the defeat of the war, Cao Xiu has always had a heart knot, and eventually died of carbuncles, and the Wei Ming Emperor Cao Rui has always been very good to Cao Xiu, he will not say that Cao Xiu fought a defeat and wanted to kill Cao Xiu, so Cao Xiu should also die of illness.
The author believes that the death of Cao Ren and Cao Xiu after suffering a defeat was just a coincidence, not a deliberate murder of the general by the emperor.