“Slipping through Chencang” began as Han Xin’s story and became an idiom. The road that ended Shu is Yinping, and the man is Deng Ai. He left Zhong Hui to fix Jiang Wei’s attention and cut a path through the mountains. Soldiers climbed down the cliffs. Ma Miao at Jiangyou surrendered without a fight.
Zhuge Liang had thought about the Ziwu valley and had not taken it. Deng Ai took a different, remoter path, and it worked. Do not merge the two plans into one man’s wisdom. The Yinping page tells the result. This page is the route: while Jian’ge was watched, the side of Chengdu was empty.