Sima Yi's strategy of driving away the tiger and devouring the wolf is the most wonderful. Although many people have put forward similar strategies in history, Sima Yi's strategy is the most deadly. Sima Yi not only completely reversed Cao Cao's decline with this move, but also gained Cao Cao's appreciation, which made him gradually walk from a small boss to the political front of Cao Wei. The author loves the history of the Three Kingdoms, and introduces the cause and effect of this deadly trap from the following five aspects.
1, Guan Yu's northern expedition
In 2 19 AD, Liu Bei defeated Cao in Hanzhong, followed the trail and captured Shang Yong and Fangling to the east, completely connecting Jingzhou and Yizhou, and his career reached its peak. The battle of Hanzhong dealt a great blow to Cao Cao, which not only made him lose the opportunity to seize Bashu from Hanzhong, but also lost General Xia. In the same year, in response to Liu Bei, former general Guan Yu also launched the Northern Expedition against Cao Cao in Jingzhou, that is, the battle of Xiangfan. Cao Jun has been hit hard one after another, and strategically it has turned to the defensive. Cao Cao, who is old, appointed a confidant general Yu Ban and a surrender general Pound to save Jingzhou.
The man with long beard is a great hero of China.
At the beginning of the battle of Xiangfan, Guan Yu's army besieged the border, dug the Hanshui River, flooded the seventh army, escaped from the ban and beheaded Pound, and easily defeated the first strong army sent by Cao Cao to Jingzhou. Lifting the threat of Cao Cao's reinforcements, Guan Yu immediately divided Xiangyang and Fancheng and launched a fierce attack.
Cao Ren, who was guarding Fancheng, was desperate to fight Guan Yu to the death. Although Coss can guarantee that Fancheng will not fall, there are still many Cao Wei generals surrendering to Guan Yu in the vast northern part of Jingzhou, such as Hu Xiu, the Jingzhou secretariat appointed by Cao Cao. Not only that, thousands of people in Wancheng (Nanyang County), near Luoyang, responded to Guan Yu's Northern Expedition, and even some refugees south of Xudu made an insurrection in the name of attaching themselves to Guan Yu. Continued turmoil continues to threaten Cao Cao's ruling hinterland. For a time, Guan Yu's military strength made China awe.
3. Cao Cao negotiated to move the capital.
Nanyang County (Wancheng), located in the northernmost part of Jingzhou, is the gateway of Jingzhou to the Central Plains. Zhuge Liang's "Longzhong Dui" once pointed out that if Liu Bei's army can cross Wancheng and capture Luoyang, it may replace Cao Cao to capture the Central Plains. If Cao Cao doesn't take other measures to rescue Coss at this time, then even if Coss has the ability again, Xiangyang and Fancheng, which run out of ammunition, will fall into Guan Yu's hands sooner or later.
Cao Cao clearly saw that after Guan Yu got Fancheng, he might attack Nanyang County, Luoyang and Xuchang. This is the core area of Cao Cao's rule. Once hit by Guan Yu, Cao Cao Group will inevitably collapse. Therefore, in order to avoid Guan Yu's military power, Cao Cao once planned to give up Xuchang, which had ruled for many years, and move the capital to Yecheng, north of the Yellow River.
Sima Yi hit the nail on the head.
At the critical moment, Sima Yi, a little-known master book, actively stood up and resolutely opposed Cao Cao's move to the capital. He thinks that giving up Xuchang means giving up the south of the Yellow River. Sima Yi stated to Cao Cao that Guan Yu was not invincible, and the key to breaking Guan Yu was Sun Quan, who was eager to move south. Sima Yi suggested that Cao Cao should make rational use of the Jingzhou dispute, disintegrate the alliance between Sun and Liu, and unite Sun Quan to attack Guan Yu from the rear. Cao Cao gave up the idea of moving the capital and sent envoys to Sun Quan instead. At the same time, he sent a second support force to Jingzhou, which was commanded by the famous Huang Xu.
Cao Cao sent Huang Xu to raid Guan Yu and finally solved the siege of Fancheng. At the same time, Guan Yu's Jingzhou army was attacked between Scylla and Charybdis because Monroe, Lu Xun and others of Soochow attacked the South Army in Guan Yu's rear area. Guan Yu, a mighty Hou Ting in the Han Dynasty, was defeated by Wu Dong's Monroe and Cao Wei's Huang Xu, and all the Jiangling, Wuling and Lingling areas in Nanjun, which Guan Yu had previously guarded, fell into the hands of Sun Quan.
Sima Yi's strategy of driving the tiger and devouring the wolf made most of Jingzhou fall directly into the hands of Sun Quan, but it eased the potential danger of the collapse of Cao Cao Group. In the end, Sun Quan failed to pose a great threat to the north from Jingzhou like Guan Yu. Later, his wars against Xiangyang and Jiangxia ended in fiasco.
5, the subsequent impact of the incident
First, because Guan Yu was killed and Jingzhou fell, the strength of Liu Bei Group was hit hard, and the overall strength was not as good as that of Sun Quan in Jiangdong. After Sun Quan annexed Jingzhou and Jiaozhou, his strength was further enhanced, and the situation of tripartite confrontation became more obvious.
Second, Zhuge Liang's original plan for Liu Bei, which was right in Longzhong, required Liu Bei to separate Jingzhou and Yizhou at the same time, no longer exists.
Third, Sun Quan killed Guan Yu and seized Jingzhou, which greatly intensified the contradiction between Sun and Liu, and soon the two sides fought again. Liu Bei was defeated in the battle of Yiling launched by himself, and Sun Quan, the defender, was also hit, and Cao Wei, who sat quietly watching the tiger fight, became the biggest beneficiary.
Fourth, due to the loss of the important Jingzhou, Liu Bei Group was not only trapped in the southwest, but also unable to make a northern expedition from the Hanshui River Basin in Jingzhou. After the founding of Shu and Han, Zhuge Liang could only send troops from the remote western Gansu, but it was always difficult to break through Chang 'an, and many expeditions were in vain.