He had a wide knowledge-base and wrote many books such as "Choya gunsai" (Collected Official and Unofficial Writings) and "Kaichu-reki" and "Shochu-reki" both of which were the origin of "Nichureki" (a dictionary written in the Kamakura period).
博識で『朝野群載』や『二中歴』の元となった『懐中歴』・『掌中歴』など多くの著作を著した。