According to the 'Taihei ki' (the record of Great Peace) he taught calligraphy at the secret meetings for overthrowing the government, and he gave lectures about the new Confucianism in the Song Dynasty China and classics to Emperor Godaigo and the noble officials.
「太平記」によれば倒幕の密議の場で書を講じ、後醍醐天皇や公卿に宋学や古典を講じたとある。