When Korea was under Japanese rule, the use of the Korean language was regulated by the Japanese government. To counter the influence of the Japanese authorities, the Korean Language Society [ko] (한글 학회) began collecting dialect data from all over Korea and later created their own standard version of Korean, Pyojuneo, with the release of their book Unification of Korean Spellings (한글 맞춤법 통일안) in 1933.[3]
