A collection of kings’ writings from Seonjo (1567-1607), Injo (1623-1648), Hyojong (1649-1658), Hyeonjong (1659-1673) to Sukjong (1674-1719), printed in woodblock printing. The square style of Haeseo seem to be influenced by the style Seokbong which was very popular during mid Joseon period, and the style Haengseo and Choseo is based on the style Sonseol of early Joseon, and has adopted the style Wangheejee and shows distinctive features.