Yinping in the Three Kingdoms period was mainly located in Wenxian County, Longnan City, Gansu Province. Wenxian County belongs to Longnan City, Gansu Province. It is named after following the ancient state language. It is located at the southernmost tip of Gansu Province, bordering Sichuan and Shaanxi, in Qinba Mountain and at the southern gate of Gansu Province. Wenxian County, located in the western Qinling Mountains and the southern Qinling Mountains, is an area with strong neotectonic movement, complex geological structure, large surface undulation, exposed rocks and developed gullies. The whole territory is in the middle and high mountains and rivers and valleys. Therefore, Wenxian County is located at the junction of Gansu, Sichuan and Shaanxi, which has an equally important geographical position. ?

in the late Han dynasty and the three kingdoms period, Wenxian county was located at the junction of Shu, Han, Cao and Wei, which can be said to be a battleground for military strategists. Yinping was also called Yinping ancient road. In the sixth year of Emperor Gaozu (the first 21 years), the Western Han Dynasty established Yinping Road in this area, which belonged to Guanghan County. In the second year of Emperor Yongzheng of Han Dynasty (18), the northern captain of Guanghan was changed to the captain of Guanghan's vassal state to rule Yinping Road. In the 2th year of Jian 'an (215), after Cao Cao captured the land of Hanzhong, Guanghan was changed to Yinping County. Therefore, for Yinping County, it is the territory of Cao Wei. ?

In the late Three Kingdoms period, Deng Ai Mi sailed in a level tone to avoid Jiang Wei's main force and instantly destroyed Shu. His courage and bravery was an eternal swan song, and Deng Ai was directly rated as an ancient and modern star by later generations. In 263 AD, Wei Jun No.3 Road sent troops to attack Shu. The first route was led by Zhong Hui, with 1, troops. It started from Xiegu, Luogu and Ziwu Valley in three ways, and after taking Hanzhong, it attempted to attack Chengdu. The second road was led by Wargo, with 3, troops, Didao, now Lintao, Gansu Province, and the third route was led by Zhuge Xu, with 3, troops, attacking Wudu, now northwest of Chengxian County, Gansu Province. ?

facing the attack of the three armies, Jiang Wei, the general of Shu, held on to Jiange to stop Zhong Hui and others. After Cao Pi proclaimed himself emperor, several generations of Wei monarchs were not as good as one generation, and their power was born, and the power of the department was getting bigger and bigger. In 262, Si Mazhao, the general of Wei, was in charge of state affairs and decided to destroy Shu first and then Wu. Feng Zhong will go to the Guanzhong Army to prepare for General Zhenxi. Shu Han's national strength is weak, and many northern expeditions have failed. It is not a waste that Shu Dao is difficult to go to the sky. The geographical position of Shu determines that it is easy to defend but difficult to attack.