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When emperor Lý Thánh Tông died in 1072 she and thái sư (chancellor) Lý Đạo Thành were appointed regents for 7-year old son Lý Nhân Tông, the son born to Lý Thánh Tông by his concubine, the second queen Ỷ Lan.
A modern viewpoint is that the Chancellor morphs into a tiger (Thái sư hóa hổ) story in Ngô Sĩ Liên's work might be derived from the book Việt điện u linh (Compilation of the potent spirits in the Realm of Việt) of Lý Tế Xuyên; this hypothesis can explain the existence of such mythic elements in an official historical record for a dynasty like Đại Việt sử ký toàn thư.
Initially, the regency of the young emperor was placed in the hand of the chancellor (Vietnamese: thái sư) Lý Đạo Thành and the Empress Mother Thượng Dương but she was soon dismissed by Lý Nhân Tông after the influence from the emperor's natural mother Ỷ Lan.