Therefore, they didn't allow their own king or the kings of neighboring countries to use the character '皇' on the grounds that it went against reason, and they called the emperor of Japan 'the king of Japan' or '일본_천황' (Ilbon Chonhwang).
それゆえ、自らの王や周辺諸国の王が「皇」の文字を使用する事は道理に反するとして認めず、天皇の事を「日本国王」「wko일본_천황」などと呼んできた。