The essence of calligraphy must pay attention to the origin of Chinese characters. Chinese characters should have evolved from rock paintings, resulting in Oracle Bone Inscriptions, inscriptions on bronze, seal script, official letter, real script and cursive script. Although ever-changing, they are hieroglyphics, the only living words that can be continuously understood and interpreted as cultural carriers handed down from ancient times to the present, and highly concentrated painting art, which has a strong artistic conception in itself.