六義

りくぎ, ろくぎrikugi

noun

1. six forms of the Shi Jing (genre: folk song, festal song, hymn; style: narrative, explicit comparison, implicit comparison)
2. six forms of waka (allegorical, enumerative, metaphorical, allusive, plain, congratulatory)
3. six principles of calligraphy
4. six classes of kanji characters

Study it in Yanamino