Writing intention: To prevent aspirants from rebelling (attacking) and engage in local separatism.
In the thrilling atmosphere of changeable and dangerous situations, I finally wrote Jiange, a fortress in central Sichuan. There is a 30-mile plank road between Dajianshan and Xiaojian Mountain. The peaks are like swords, the mountains are towering, and the walls are cut like doors, forming a natural fortress. Because of its dangerous terrain, it is easy to defend but difficult to attack. Historically, there were many people who claimed to be kings here. The poet described a political situation from the danger of Jiange. He borrowed the phrase "the victory lies in the shape, but the bandits don't live together" from Zhang Zai's Ming of Jiange in the Western Jin Dynasty, aiming to persuade people to take warning and be alert to the occurrence of war. Combining with the social background at that time, he revealed that "the tiger's teeth are sharp, and the wolf in Shu" was not only a pun on the beasts of Shu, but also an allusion to political darkness, expressing his worries and worries about national affairs.