. ▁ ▁It ▁is ▁not ▁clear ▁when ▁she ▁became ▁his ▁conc ub ine , ▁but ▁it ▁was ▁likely ▁after ▁he ▁already ▁had ▁his ▁first ▁em press , ▁Em press ▁Yu , ▁in ▁ 5 0 1 . ▁ ▁Once ▁she ▁became ▁a ▁cons ort , ▁she ▁was ▁said ▁to ▁have ▁gained ▁his ▁favor , ▁and ▁with ▁her ▁uncle ▁G ao ▁Z ha o ▁being ▁a ▁powerful ▁official , ▁it ▁was ▁believed , ▁when ▁Em press ▁Yu ▁died ▁in ▁ 5 0 7 , ▁and ▁Em press ▁Yu ' s ▁son ▁Y uan ▁Ch ang ▁( 元 昌 ) ▁died ▁in ▁ 5 0 8 , ▁that ▁she ▁and / or ▁G ao ▁Z ha o ▁was ▁involved , ▁although ▁there ▁is ▁no ▁conclus ive ▁evidence . ▁ ▁She ▁was ▁created ▁em press ▁in ▁ 5 0 8 ▁to ▁replace ▁Em press ▁Yu . ▁ ▁She ▁was ▁said ▁to ▁be ▁extremely ▁je alous , ▁and ▁few ▁imperial ▁cons ort s ▁were ▁able ▁to ▁have ▁sexual ▁relations ▁with ▁the ▁em peror . ▁ ▁She ▁herself ▁bore ▁him ▁a ▁son ▁who ▁died ▁early , ▁and ▁a ▁daughter , ▁later ▁created ▁the ▁Princess ▁J ian de . ▁ ▁In ▁ 5 1 0 , ▁however , ▁Emperor ▁X uan w u ' s ▁conc ub ine ▁Cons ort ▁Hu ▁bore ▁him ▁a ▁son , ▁Y uan ▁X u ▁( 元 <0xE8> <0xA9> <0xA1> ), ▁and ▁because ▁Emperor ▁X uan w u ▁had ▁apparently ▁lost ▁sons ▁before ▁in ▁addition ▁to ▁Y uan ▁Ch ang ▁and ▁Em press ▁G