▁to ▁the ▁royal ▁palace ▁for ▁the ▁coron ation , ▁despite ▁the ▁strong ▁opposition ▁from ▁royal ▁family ▁members ▁and ▁mand ar ins ▁and ▁a ▁plan ▁made ▁by ▁the ▁royal ▁court ▁to ▁ent hr one ▁Prince ▁C ung ▁ Đ ị n h ▁Tr ầ n ▁Ph ủ ▁against ▁the ▁late ▁em peror ' s ▁will . ▁According ▁to ▁ Đ ạ i ▁Vi ệ t ▁s <0xE1> <0xBB> <0xAD> ▁k ý ▁to àn ▁th ư , ▁the ▁Queen ▁Mother ▁reason ed ▁that ▁because ▁Tr ầ n ▁D ụ c ▁was ▁not ▁passed ▁the ▁throne ▁even ▁though ▁he ▁was ▁Min h ▁T ô ng ' s ▁el dest ▁prince , ▁therefore ▁N h ậ t ▁L ễ , ▁who ▁was ▁Tr ầ n ▁D ụ c ' s ▁son , ▁des erved ▁the ▁position . ▁ ▁As ▁em peror ▁and ▁death ▁ ▁After ▁the ▁ent hr on ement , ▁N h ậ t ▁L ễ ▁changed ▁the ▁era ▁name ▁to ▁ Đ ạ i ▁ Đ ị n h ▁( 大 定 , ▁great ▁peace , ▁ 1 3 6 9 – 1 3 7 0 ) ▁and ▁made ▁the ▁daughter ▁of ▁Prince ▁C ung ▁ Đ ị n h ▁Tr ầ n ▁Ph ủ ▁his ▁queen ▁cons ort . ▁Only ▁half ▁a ▁year ▁after ▁taking ▁the ▁throne , ▁the ▁new ▁em peror ▁ordered ▁the ▁poison ing ▁of ▁the ▁Great ▁Queen ▁Mother ▁Hi ế n ▁T <0xE1> <0xBB> <0xAB> , ▁who ▁had ▁begun ▁to ▁regret ▁her ▁support ▁for ▁the ▁coron ation ▁of ▁N h ậ