Four ancient art relics or painting color skills, also known as elegance.
Just four people.
2. Playing the piano and playing chess in ancient times.
Chess (mostly China chess and Go), calligraphy and painting.
Scholars and poets (including some aristocratic families) should cultivate their self-cultivation.
Mastering skills, so collectively referred to as piano, chess, calligraphy and painting, that is, "four friends of literati."
Nowadays, it often expresses personal cultural accomplishment.