The famous sentence of "Difficult Shu Dao" is: Difficult Shu Dao, difficult to go to heaven. It means: Shu Dao is really difficult to walk, and it is almost impossible to go to heaven.

Shu Dao Nan is the masterpiece of Li Bai, a great poet in China in the Tang Dynasty. This poem imitates the theme of the old Yuefu, develops rich imagination in a romantic way, and artistically reproduces the spectacular, abrupt, tough, rugged Sichuan road and the incomparable majestic momentum, thus praising the magnificent scenery of Sichuan mountains and rivers, showing the magnificent mountains and rivers of the motherland, and fully expressing the poet's romantic temperament and love for nature.