He was known as a calligrapher already in Tang, and was affected, in particular, by the Tang style of Wang Xizhi and Gan Shinkei, and was good at all of tensho-tai (seal-engraving style of writing Chinese characters), reisho-tai (clerical script), kaisho-tai (square block style of writing), gyosho-tai (semi-cursive style of writing), sosho-tai (cursive style writing), and hihaku-tai (splash pattern of writing) characters.
唐の地ですでに書家として知られ、殊に王羲之や顔真卿の書風の影響を受け、また篆書体、隷書体、楷書体、行書体、草書体、飛白体文字すべてよくした。