Are Jin calligraphers really called Jin calligraphers?

Really.

Dai, 1972, a native of Pingdu, Shandong Province, is now a registered teacher of China Calligraphers Association, a member of Qingdao Calligraphers Association, a member of Shandong Education Calligraphers Association and a national ceremony artist. He has studied calligraphy since childhood and dabbled in many subjects, especially regular script, seal script and official script.