Under what background did the battle of Jiange Road take place?

Under what background did the battle of Jiange Road take place?

In the later period of the Three Kingdoms, the situation that Wei, Wu and Shu fought side by side gradually collapsed due to the ups and downs of the three forces.

After Zhuge Liang's death, Jiang Wan and Fei Yi assisted the court. They follow Zhuge Liang's established policy, unite internally and don't use troops easily. Shu Han once maintained a relatively stable situation.

From 247 to 262, the Shu-Han Dynasty launched a war against Wei through the general Jiang Wei, and its strength was increasingly consumed. In addition, the late ruler Liu Chan favored eunuch Huang Hao and failed to govern Japan.

Jiang Wei once impeached Huang Hao, but was forced by Huang Hao and was disgusted with Jiang Wei's repeated attacks on Wei. Jiang Wei had no choice but to stay in the wilderness and support the northern defense. The internal and external differences were serious. At this point, the foundation of Shu Han has been greatly shaken.

At this time, after Sun Quan's death, Wu was at home and abroad, and social contradictions became more acute. Many attacks on Wei also ended in failure. Wu's strength has been greatly weakened.

After Cao Cao, who claimed to be the emperor of Wei, died, Cao Fang, king of Qi, proclaimed himself emperor, and Cao Shuang and Sima Yi successively took power. After the incident of Gao Ping Ling, the power fell into the hands of Sima. After Sima Yi's death, his sons Sima Shi and Si Mazhao successively took power.

On the one hand, Sima's father and son vigorously eliminated Cao Shi's forces and snared the cremation. At the same time, it also pays attention to recruiting talented people, immigrating to real borders, continuing Cao Cao's law, popularizing reclamation and building water conservancy projects, so that Wei under Sima's control is politically stable, economically developed and militarily powerful.

Externally, General Wargo defeated Jiang Wei's Northern Expeditionary Army many times, and also won the battle of Shouchun, and began to prepare to conquer Shu and unify the world.

In 262, Si Mazhao analyzed the situation at that time, and thought that Shu Han was "tired of learning old friends and knew all about it", and decided to adopt the policy of "taking Shu first now, and three years later, because Bashu goes downstream, land and water go hand in hand", which was considered impossible by the DPRK ministers, but they would all support it.

To this end, Zhong was appointed General Zhenxi and Commander in Chief of Guanzhong, ready to attack Shu. At the same time, he threatened to attack Wu first to confuse him. Jiang Wei heard the news and reported it to Liu Chan. He suggested sending troops to guard Yang 'an Pass (that is, Yangping Pass in the northwest of ningqiang county, Shaanxi Province) and Yinping Qiaotoubao (in the northwest of Wenxian County, Gansu Province) to make preparations.

But the latter only prized eunuch Huang Hao, and Huang Hao believed in ghosts and thought that Wei Jun would not attack. Liu Chan took Jiang Wei's suggestion for granted, ignored it and didn't even let his ministers know.