Huai Su is an outstanding calligrapher in the history of China. His cursive script is called "Crazy Grass". His pen is round and powerful, making it turn like a ring, unrestrained and smooth, just like Zhang Xu. Later generations called it "Zhang Dian vegetarian" or "drunk". It can be said that it is a classical romantic art, which has a far-reaching influence on later generations. He also wrote poems and had contacts with poets such as Li Bai, Du Fu and Su Xun. Good at drinking, whenever drinking rises, regardless of walls, clothes, utensils, arbitrary writing, when people call it a "drunken monk." His cursive script was written by Zhang Zhi and Zhang Xu. Lu Tang, the general manager, said in his reading review: "Huai Su's cursive script changes at will with the help of electricity, and Huai Su's book is listed as a wonderful work in The Continuation of Books by Song and Zhu. The commentary said: "If a strong man draws his sword, the color of the gods will be moving. "
Huai Su was smart and studious since childhood. In his "readme post", he said straight to the point: "Huai Su lives in Changsha, a young Buddhist. After meditation, I am quite fond of writing. " His spirit of studying hard and practicing hard is amazing. Because he couldn't afford to buy paper, Huai Su found a board and a disc and painted it with white paint to write. Later, Huai Su thought the lacquer board was smooth and not easy to ink, so he planted more than 10,000 plantains on a wasteland near the temple. When the banana grew up, he picked the leaves and spread them on the table, waving at the post. Because Huai Su practiced calligraphy day and night, the old banana leaves were peeled off and the lobules were reluctant to pick, so he thought of a way to stand in front of the banana tree with pen and ink and write to the fresh leaves, even if the sun shone on him like a frying pan; The biting north wind cracked his hands and skin, but he kept practicing calligraphy regardless. He kept writing about one place after another. This is the famous calligraphy practice of Huai Su Banana.