posed ▁him , ▁and ▁soon ▁had ▁him ▁killed . ▁ ▁As ▁crown ▁prince ▁ ▁It ▁is ▁not ▁known ▁when ▁Y uan ▁Q in ▁was ▁born . ▁ ▁What ▁is ▁known ▁is ▁that ▁he ▁was ▁the ▁oldest ▁son ▁of ▁Y uan ▁Ba oj u ▁the ▁Prince ▁of ▁N any ang , ▁a ▁grand son ▁of ▁Emperor ▁X ia ow en ▁of ▁Northern ▁Wei , ▁by ▁his ▁wife ▁Princess ▁Y if u , ▁and ▁that ▁he ▁had ▁one ▁younger ▁brother ▁by ▁Princess ▁Y if u , ▁Y uan ▁Wu ▁( 元 <0xE6> <0x88> <0x8A> ). ▁ ▁Ar ound ▁the ▁new ▁year ▁ 5 3 5 , ▁Emperor ▁X ia ow u ▁of ▁Northern ▁Wei — a ▁cousin ▁of ▁Y uan ▁Ba oj u ▁and ▁the ▁final ▁em peror ▁of ▁the ▁und iv ided ▁Northern ▁Wei ▁state ▁but ▁who ▁by ▁now ▁was ▁only ▁em peror ▁over ▁the ▁western ▁part ▁of ▁the ▁state ▁( i . e ., ▁Western ▁Wei ) ▁-- ▁was ▁poison ed ▁by ▁the ▁param ount ▁general ▁Y uw en ▁Tai ▁over ▁a ▁dispute ▁developed ▁when ▁Y uw en ▁disapp ro ved ▁of ▁his ▁inc est uous ▁relationship ▁with ▁Y uan ▁Ba oj u ' s ▁sister ▁Y uan ▁M ing y ue ▁( 元 明 月 ). ▁ ▁Y uw en ▁Tai ▁made ▁Y uan ▁Ba oj u ▁the ▁new ▁em peror ▁( as ▁Emperor ▁W en ). ▁ ▁Emperor ▁W en ▁created ▁Princess ▁Y if u ▁em press , ▁and ▁created ▁Y uan ▁Q in ▁crown ▁prince . ▁ ▁In ▁ 5