Calligraphy expresses the author's feelings and artistic conception through the density of structure, the weight of strokes and the urgency of strokes.
Rodin once said: "A prescribed line runs through the universe and gives everything that has been created. If they run in this line and feel free, nothing ugly will happen. " He added: "The Greeks therefore studied nature deeply, and their perfection came from this, not from an abstract idea."
China's calligraphy pays attention to "stroke by stroke, pulse by pulse", just like Rodin's "line running through the universe".