In 1910, the Korean government concluded the Japan–Korea Treaty of 1910, and he was refused to official duties and baron title. but his father Yun Ung-ryeol was give to baron title. also his father death he was Successor for baron title, his thought sans se soucer. In 1911, fabricate for 105 peoples crime, he was arrest for Seodaemun Police Station. also three years imprisonment, also batter and torture for him. In 1915, special release on parole. In he was joint to more civic group and social movement. later he was power training lecture activity engineering technic to domesticate. desire of education.