The structure of characters and stippling are forms of calligraphy: it means that the information conveyed by calligraphy is both material and spiritual. "Form and quality" obviously refers to the material form of calligraphy. Literally, "shape" means "shape" and "quality" means "quality", which refers to specific strokes, lines and shapes; "Emotion" can be understood as "emotion" and "spirit", and it is of course a spiritual expression.
This "form" and "emotion" are tangible and intentional, which constitute the complete content of calligraphy.