Is Huai Su known as the "Grass Sage"?

Huaisu wrote cursive script without practicing regular script well. Although he was very domineering, it was difficult to cover up the shortcomings of his poor foundation in regular script. He was flattened, exaggerated and artificial, and his hand was not full, so he did not win the title of Cursive Sage. Nowadays, some people want to take shortcuts and write cursive because they don’t have the patience to practice regular script. In order to gain theoretical support, they try to make Huaisu, who has no regular script skills, a cursive saint. However, anyone familiar with the history of calligraphy knows that this is a joke