Isn't the membership card of Changzhou Calligraphers Association numbered?

Yes According to Baidu, the membership card of Changzhou Calligraphers Association is numbered, and each member of the association has its own number. Calligraphers' Association is a people's organization led by China's * * * production party and composed of calligraphers of all ethnic groups in China. It is a national professional organization composed of national calligraphers, seal engravers, calligraphy theorists, calligraphy educators, organizers and managers of calligraphy activities, and a group member of China Federation of Literary and Art Circles.