No age limit. There are no restrictions on participation qualifications for members of the Chinese Bookstore Association, and all age groups can submit freely. The Chinese Calligraphers Association is a people's organization composed of calligraphers of all ethnic groups across the country under the leadership of the Communist Party of China. It is composed of national-level calligraphers, seal carvers, calligraphy theorists, calligraphy educators, and calligraphy activity organizations and managers. is a national professional organization and a corporate member of the China Federation of Literary and Art Circles.