Who was called "Poet Saint" and "Grass Saint" in the history of China?

Poet Saint Du Fu: The word (7 12-770), Shaoling, Xiangyang, is a great realistic poet. He wrote a lot of excellent poems such as "Three Officials" and "Three Farewells", and wrote eternal quatrains such as "The wine in Zhumen stinks and the bones on the road freeze to death".

Zhang Xu, Cao Sheng

Zhang Xu (date of birth and death unknown), a native of Suzhou, is a commandant of Changshu County. Great calligrapher of Tang Dynasty. It is famous for cursive writing. Tang Wenzong once issued a rare imperial edict to the whole country: Li Bai's poems and songs, Zhang Xu's cursive script and Fei Min's sword dance can become the "three wonders" in the world.