 In late 520, Yuan Cha spent much of Northern Wei's energy on trying to restore Rouran's khan Yujiulü Anagui, who had been overthrown by his cousin Yujiulü Shifa (), despite warnings that doing so would either be fruitless or counterproductive.The restoration was successful, but by 523 Yujiulü Anagui had rebelled and an enemy to Northern Wei again.In spring 521, the general Xi Kangsheng () made an attempt to restore Empress Dowager Hu, but failed.