China's 5,000-year splendid civilization and unparalleled rich written records have been recognized by the world. In this long and profound history, China's calligraphy and painting art reproduces this diachronic evolution process with its unique artistic form and artistic language. Because the tools and materials used in the creation of calligraphy and painting are the same, the sister art of calligraphy and painting has interpreted the traditional cultural connotation of China with its complementarity and independence in the historical evolution. Calligraphy is an abstract symbolic art based on Chinese characters and written with a brush, which has four-dimensional characteristics. It embodies the basic law of the "unity of opposites" of all things, and reflects the spirit, temperament, knowledge and cultivation of people as the main body. China's historical civilization is a diachronic and linear process, and China's calligraphy art shows its development under such a background.