It is a passage from "Aye, Woo, Aye" to "Then the ladder is connected with the stone pile". At the beginning, he spoke highly of the difficulty of Shu Dao and pointed out the theme with strong emotion, which laid the tone for the whole poem. With the ups and downs of feelings and the changes of natural scenery, the chanting of "it is difficult to get through the Shu Road and get to the sky" appears repeatedly, like the main theme of a piece of music, which touches the readers' heartstrings.
It is more difficult to say that Shu Dao is more difficult than the sky. This is because since ancient times, Qin and Shu have been blocked by mountains. From Qin to Shu, Taibai Peak is the first barrier, and only birds flying high can fly from low places. Taibai Peak, located in the southwest of Xianyang, Qin Dou, is the highest peak in Guanzhong area. There is a saying among the people that "martial arts are too white, and three hundred miles reach the sky."
The poet wrote an insurmountable obstacle in history with exaggerated pen and ink, which blended into the myth of Wuding Mountain and touched the magical color, just like the overture of a movement, which was fascinating and magical. The following is a description of the high danger of Shu Dao.
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From this poem, "What if he is not loyal, but is a wolf to his companion?" The author wrote about the beautiful mountains and rivers of Shu and warned the authorities that Shu was dangerous and should be well defended by the people.
Poetic prose is mixed, the sentences are uneven, the brushwork is vertical and horizontal, and it is bold and free. The whole poem has strong feelings, three sighs and repeated cycles, which makes people excited to read.