 After Qutluq Bilge's untimely death he succeeded to the qaghanate upon election of nobles.He didn't change his surname to original one but kept Yaglakar name, nevertheless he exiled all of remaining princes from cadet branches to Chang'an.One of his first deeds was to adopt Manichaeism as the state religion again in 803, after a visit to Manichean temple in Qocho.