Second, the display position of calligraphy works has a great relationship with the intensity of light.
Third, the content belongs to the first.
Fourth, it can immediately arouse the audience's re-creation (that is, it has been felt or inspired).
Fifth, work spirit.
Sixth, the author's basic skills are "reflected in the mood sustenance and display at that time", with free brushstrokes, the thickness and strength of brushstrokes.
(-for example, writing Yue Fei's "The Red River", if the strokes are broken and soft as dragonflies, is obviously very different from Yue Fei's mood).
You can see the difference in the picture: