嗣德帝
In light of Định's disobedience of Tự Đức, his justification for his defiance is discussed against the backdrop of the Confucian expectation for him to defer to the emperor's "Mandate of Heaven". As Định left no explicit or definitive statement for his rationale for disobeying Tự Đức, scholars who have recognised or suspected Định's disobedience have been forced to speculate.