The  was the first Japanese dictionary to collate words in the now standard gojūon order. This Muromachi Period dictionary's title uses a Classical Chinese four-character idiom from the Lunyu: "The Master said, "If a man keeps cherishing his old knowledge, so as continually to be acquiring new, he may be a teacher of others."
This Muromachi Period dictionary was the first Japanese reference to arrange words in the gojūon order. Its title is sourced from a Classical Chinese four-character idiom found in the Lunyu: "The Master said, 'If one preserves their old knowledge and continually acquires new, they may serve as a teacher.'"