Why is cursive writing an abstract work?

The cursive script inherits the technique of changing strokes from the ancient method. According to the simplified characters of regular script, there are some abstract methods such as borrowing, merging, deformation and continuity of strokes, which breaks the stable and dignified structural rules. The radical of the word is displaced and deformed, and the center of gravity is tilted and turbulent. The words echo up and down, creating a free space for calligraphers to display their personal talents and express their artistic individuality. So cursive script is an abstract work.