However, once he had firmer grasp on power, he stopped being as respectful to her and Yang Tong. In summer 619, he sent the officials Duan Da () and Yun Dingxing () to force Yang Tong to yield the throne to him.
Although he gained more power, he was no longer respectful towards her and Yang Tong. In summer 619, he instructed officials Duan Da () and Yun Dingxing () to compel Yang Tong to surrender the throne to him.