The core of calligraphy is actually culture, so to learn calligraphy well, children should have a certain understanding ability. Usually seven or eight years old is the best. Wang Xizhi began to learn calligraphy at the age of seven or eight.
Art covers a wide range, including professional sketches, oil paintings and gouache. It also expresses children's feelings, such as children's paintings and picture books. To cultivate children's spatial perception and expression ability and preliminary aesthetic foundation. Usually you can start learning at the age of three or four.
In summary, art is recommended.