5 4 0 , ▁he ▁was ▁further ▁forced ▁to ▁initially ▁send ▁Em press ▁Yu ji ul ü ▁away ▁from ▁Ch ang ' an ▁( to ▁live ▁with ▁Y uan ▁Q in ' s ▁younger ▁brother ▁Y uan ▁Wu ), ▁and ▁then ▁forced ▁to ▁order ▁her ▁to ▁commit ▁suic ide . ▁ ▁S omet ime ▁during ▁Emperor ▁W en ' s ▁reign , ▁Y uan ▁Q in ▁married ▁Y uw en ▁Tai ' s ▁daughter ▁as ▁his ▁crown ▁prin cess . ▁ ▁It ▁was ▁said ▁that ▁he ▁fav ored ▁her ▁greatly , ▁and ▁that ▁he ▁had ▁no ▁conc ub ines . ▁ ▁In ▁ 5 4 2 , ▁during ▁an ▁assault ▁that ▁Eastern ▁Wei ' s ▁param ount ▁general ▁G ao ▁H uan ▁launched ▁on ▁the ▁border ▁city ▁Y ub i ▁( 玉 <0xE5> <0xA3> <0x81> , ▁in ▁modern ▁Y unch eng , ▁Sh an xi ), ▁Y uan ▁Q in ▁was ▁made ▁the ▁def ender ▁of ▁the ▁important ▁city ▁Pub an ▁( <0xE8> <0x92> <0xB2> 坂 , ▁in ▁modern ▁Y unch eng ▁as ▁well ), ▁while ▁Y uw en ▁launched ▁an ▁army ▁to ▁try ▁to ▁catch ▁up ▁with ▁G ao ▁as ▁he ▁retre ated . ▁ ▁It ▁is ▁not ▁known ▁how ▁much ▁responsibility ▁or ▁authority ▁Y uan ▁Q in ▁actually ▁had ▁during ▁this ▁campaign . ▁ ▁In ▁ 5 5 1 , ▁after ▁Emperor ▁W en ▁died , ▁Y uan ▁Q in ▁took ▁the ▁throne ▁as ▁Emperor ▁Fe i . ▁ ▁As ▁em peror ▁ ▁Emperor ▁Fe i ▁appeared ▁to ▁have ▁even ▁less