What sentence pattern does calligraphy hide?

Sentence patterns are rhetorical. Calligraphy without concealment is a rhetorical sentence, also known as metonymic sentence and empty sentence. By means of ellipsis and metonymy, the implied purpose is achieved by hinting or leaving blank in expression. Calligraphy does not imply that someone's calligraphy skills are excellent, and he does not hide or conceal his true level at all, but also implies that his calligraphy has reached a high level.