From the perspective of Buddhism, learning calligraphy requires epiphany ... heavenly ... so if you can't epiphany, you can't understand the true meaning of calligraphy? Will be obsessed?

According to my personal knowledge, personal opinion:

Calligraphy is the law of the world and art, and the appreciation of calligraphy is only the culture of local people on the earth and even in humanitarian areas. This has something to do with people's ideas and has nothing to do with epiphany in Buddhism.

Epiphany in Buddhism has nothing to do with ideas. According to the translation of monk Dazhu, epiphany is to get rid of delusion and realize nothing.