Not only is Li Bai recognized by literary critics throughout generations as a super first-class great poet in the history of Chinese literature, but even the "Sage of Poetry" Du Fu held him in the highest esteem, once praising him as "invincible in poetry" and "agile in writing thousands of poems". Moreover, Li Bai himself was quite arrogant. Needless to say, it was very difficult for the works of his contemporary poets to meet Li Bai's high standards.