You should subscribe to several authoritative hard pen calligraphy newspapers or magazines, and make sure that the organizers of the hard pen calligraphy association will publish them in the newspapers as soon as possible. If you want to pay money, be careful that someone invites you to participate in the competition purely for a certificate. That is to say, if you give money, he will give you a certificate and give you a title, director of any overseas institution, honorary vice president and so on. This certificate is useless. Nowadays, calligraphy websites are generally not perfect, not as perfect as newspapers.
I used to order calligraphy newspapers, calligraphy guides, pen calligraphy newspapers, etc. You can order it at the post office.