Three years. The "National Calligraphy Symposium" is the highest-level calligraphy academic seminar in the country hosted by the Chinese Calligraphers Association, held every three years. The National Calligraphy Symposium was established by the Chinese Calligraphers Association and is the highest-level and most influential academic exhibition in the field of Chinese calligraphy theory. It aims to promote the development of calligraphy theory and discipline and display the results of calligraphy theory research.