Where is the fair arena for Wargo to smuggle Shu, and what is the terrain?

The road for Deng Ai to destroy Shu is a long one, starting from Guyiba, Wenxian County, Longnan, Gansu Province and ending at Jiangyouguan, Pingwu County. As you can imagine, it is a very dangerous road to cross mountains and mountains in the middle. Wargo went deep into the danger, successfully sneaked into Jiangyou Pass and entered the hinterland of Shu, making great contributions to the war against Shu.

There was a vivid description of the precipitousness of Shu Mountain in the difficulties of Shu Road, and Li Bai once lamented: It's hard to get through the Shu Road, and it's hard to get to the sky. ? It can be seen that the terrain in this area is very rugged, especially easy to defend but difficult to attack? Jiange? , used to it? One person guards it, and ten thousand people can't force it? And famous all over the world, Shu Han really occupies a very unique geographical position. Jiang Wei is guarding this place in Jiange, not to mention the army. It is difficult for a person to break it, which stumbles Wargo, who has occupied many cities in Shuhan. However, God never shuts one door but he opens another. After topographic survey, Wargo came up with a way to sneak into the hinterland of Shu, which is unlikely to be discovered. However, this way is very dangerous, and the difficulty coefficient is very high, that is, sneak in from Yinping alley.

The History of the Three Kingdoms has a detailed record of this history:? In winter and 10, Ai started from Yin Ping Road in no man's land, walked more than 700 miles, cut through mountain roads, and built bridges and pavilions. The mountains are high and the valleys are deep, which is extremely difficult and dangerous, and there will be a shortage of grain transportation and frequent dangers. Ai wrapped herself in felt and pushed it down. All the soldiers climbed the wooden cliff and formed a file. ? One of them? No man's land? Not Ma Pingchuan, since there is no one, it must be a place like a primeval forest with overgrown weeds, and the enemy will block it, have means to resist it, open the way to meet the mountain, and bridge the bridge when it meets the water. This road is not a road, but a road created by Indiana Jones led by Wargo. What's more, there are steep cliffs here, and the environment is very sinister, and food cannot be transported. They climbed over the cliff with their hands and feet.

So, in this way, Wargo overcame difficulties and obstacles and sneaked into the capital from Yinping Road, destroying the Shu army.