Cao was a medium-sized author, a master of literature, a master of letters, a master of drawing, a master of pencils, a master of writing, a master of pencils for beginners.
曹一阁毛笔狼毫兼毫羊毫大中小楷书法专业级大人小学生中楷练字国画抄经软笔篆隶行书写对联初学者毛笔套装