Fu Shan made contributions to the theory of calligraphy art. The theory of "Four Nings and Four Nos" proposed by him is extremely insightful and has universal significance and far-reaching influence on the entire art category. "It is better to be clumsy than clever, ugly than flattering, detached rather than slippery, and straightforward rather than arranged, which is enough to influence the field of Chinese calligraphy. It is better to pursue ancient clumsiness than to pursue gorgeousness when writing books. We should pursue a style that is as clumsy as clumsy. An artistic realm that is implicit and unobtrusive. It is better to write ugly or even rough-looking than to be servile and servile. It is better to pursue inner beauty than to be frivolous and frivolous. , the interest of natural sparseness is far better than the appearance of frivolous character. It is better to write straightly and without worries, rather than to decorate your eyebrows and hair, which is suspected of making a fool of yourself.
Fu Shan's theory is great. He has the intention of criticizing the current situation and turning the tide. He can be said to be a great enlightenment. Compared with the literati and scholars of his generation, his poems have no intention of advocating for the saints or making suggestions for the rulers. On the contrary, he claimed to be a Taoist priest and an expatriate. When there was no hope of rebelling against the Qing Dynasty and restoring the Ming Dynasty, he expected that the world's people would change. It is getting worse and worse, so he hopes to get worse quickly, and things will change after they reach the extreme. He has conducted in-depth research on the scholars of the Warring States Period, and believes that ancient academic culture can inspire the descendants of the Yan and Huang Dynasties to work hard; he is willing to do something that can attack jade. He hopes that the nation will truly awaken and eradicate tyranny from the root.