also persuaded Wu Zetian's lovers Zhang Yizhi and Zhang Changzong the merits of the proposal—pointing out that as things stood, after Wu Zetian's death, they would be hated and would suffer terrible fates. Wu Zetian finally agreed, and in spring 698 recalled Li Zhe to the capital. Li Dan subsequently offered to yield the crown prince position to Li Zhe, and Wu Zetian agreed and created Li Zhe crown prince, changing his name to Li Xian and then Wu Xian. She soon made Di Nayan (納言), the head of the examination bureau and a post considered one for a chancellor. Also in 698, Ashina Mochuo turned against Zhou and attacked Zhou's northern prefectures. Wu Zetian made Li Xian the nominal commanding general of the army against Eastern Tujue, but made Di the deputy commanding general and actually in charge of the army. Before Di's army could arrive, however, Ashina Mochuo completed his pillaging of the northern prefectures and withdrew; Di's army never engaged him. Wu Zetian subsequently commissioned Di to tour the prefectures to pacify the people, and he was said to have done so well, helping refugees to return to their home, transporting food supplies to places needing them, repairing the roads, and helping the poor. Fearful that other officials would trouble the people with demands for luxury items, he made a good example of eating unrefined foods and prohibiting harassment of the citizens. Meanwhile, though, he was said to have looked down on Lou, not realizing that Lou had been the one that had recommended that he be made chancellor, until Wu Zetian revealed to him that fact, causing him to be embarrassed. In 700, Wu Zetian made Di Neishi (內史), the head of the legislative bureau (鳳閣, Fengge) and a post also considered one for a chancellor. By this point, she was said to have respected him so greatly that she often just referred to him as Guolao (國老, "the State Elder") without referring to him by name. It was said that, on account of his old age, he often offered to retire, and she repeatedly declined. Further, she stopped him from kneeling and bowing to her, stating, "When I see you kneeling, I feel the pain." She also ordered that he not be required to rotate with other chancellors for night duty, warning the other chancellors not to bother Di unless there was something important. Di