▁Pe i ▁X ing j ian ▁( ), ▁cour tes y ▁name ▁Sh ou y ue ▁() ▁was ▁a ▁Tang ▁dynast y ▁general ▁and ▁politician . ▁He ▁was ▁best ▁known ▁for ▁his ▁victory ▁over ▁the ▁Khan ▁of ▁Western ▁Turk ic ▁Kh agan ate ▁Ash ina ▁D uz hi . ▁He ▁was ▁also ▁responsible ▁for ▁esc ort ing ▁the ▁S as an ian ▁Pers ian ▁king - in - ex ile ▁N ars ie h ▁to ▁Pers ia ▁which ▁was ▁occupied ▁by ▁Arab ▁conquer ors . ▁He ▁dedicated ▁most ▁of ▁his ▁life ▁to ▁dealing ▁with ▁Turk ic ▁tribes ▁in ▁the ▁An xi ▁Prote ctor ate . ▁ ▁Life ▁ ▁Pe i ▁was ▁a ▁no blem an ▁from ▁Hed ong ▁Command ery . ▁His ▁pr estig ious ▁cl an ▁Pe i ▁cl an ▁of ▁Hed ong ▁had ▁contributed ▁numerous ▁polit icians ▁to ▁the ▁court ▁in ▁the ▁previous ▁dynast ies . ▁X ing j ian ▁came ▁from ▁one ▁of ▁the ▁ 3 ▁cad et ▁branches ▁of ▁Pe i ▁Cl an , ▁the ▁Middle ▁house ( the ▁other ▁two ▁branches ▁were ▁the ▁Western ▁house ▁and ▁the ▁Eastern ▁house ). ▁ ▁X ing j ian , ▁his ▁brother ▁X ing yan , ▁and ▁his ▁father ▁Ren ji ▁all ▁served ▁in ▁the ▁military . ▁During ▁the ▁reign ▁of ▁Emperor ▁Ta iz ong ▁of ▁Tang , ▁X ing j ian ▁passed ▁the ▁imperial ▁exam . ▁General ▁Su ▁D ing fang ▁saw ▁potential s ▁in ▁X ing j ian ▁and ▁personally ▁ment ored ▁him . ▁ ▁In ▁ 6 6 5