Shang'Guan Xuan

As stated in the manhua, she made a deal with the ancestor of the Azure Feather family and agreed to protect them for a 1000 years because of a favour that is to be done by Ye Xing He. She is the mentor of Ye Xing He and she helps Ye Xing He unlock his Li Tian so that he can surpass the 9th Heavenly Realm.