What are the main achievements of calligrapher Fu Shan in the early Qing Dynasty?

Fu Shan's achievements in calligraphy are mainly reflected in cursive script. He cursed not by law, but by will, not by gently bending his thoughts, but by enthusiastically venting his anger; In the process of fast pen movement, a lot of pen folding and pen pressing actions are omitted, and the words are connected with each other, bite each other, spit and swallow together, and are inseparable, which makes people feel like a dream, just like a dream. Handed down works include cursive scrolls, seven-character quatrains, Qingyang Temple Seven Wonders, cursive scrolls and so on.