▁of ▁Wu ▁was ▁a ▁son ▁of ▁Tang ' s ▁second ▁em peror ▁Emperor ▁Ta iz ong , ▁who ▁was ▁also ▁Emperor ▁Zh ong z ong ' s ▁grand father . ▁ ▁Li ▁X ian ' s ▁grand father ▁Li ▁Kun ▁( 李 <0xE7> <0x90> <0xA8> ) ▁served ▁as ▁a ▁pre fect ural ▁pre fect ▁and ▁was ▁post hum ously ▁hon ored ▁with ▁the ▁title ▁of ▁Prince ▁of ▁Wu ▁as ▁well . ▁ ▁Li ▁X ian ' s ▁father ▁Li ▁H ui ▁( 李 <0xE8> <0xA4> <0x98> ) ▁the ▁Prince ▁of ▁X in ' an ▁was ▁a ▁well - known ▁general ▁early ▁in ▁the ▁reign ▁of ▁Emperor ▁Zh ong z ong ' s ▁nep hew ▁Emperor ▁X u anz ong . ▁ ▁Li ▁X ian ▁had ▁two ▁older ▁brothers , ▁Li ▁H eng ▁( 李 <0xE5> <0xB3> <0x98> ) ▁and ▁Li ▁Y i ▁( 李 <0xE5> <0xB6> <0xA7> ), ▁both ▁of ▁whom ▁served ▁as ▁officials ▁as ▁well . ▁ ▁During ▁Emperor ▁X u anz ong ' s ▁reign ▁ ▁It ▁was ▁said ▁that ▁Li ▁X ian ▁was ▁char itable ▁and ▁hum ble , ▁willing ▁to ▁meet ▁capable ▁people ▁of ▁lower ▁social ▁stations , ▁and ▁that ▁he ▁showed ▁ab ilities ▁to ▁be ▁an ▁official ▁in ▁his ▁youth . ▁ ▁Because ▁of ▁his ▁her itage , ▁he ▁was ▁able ▁to ▁join ▁the ▁civil ▁service , ▁and ▁he ▁eventually ▁served ▁as ▁the ▁magistr ate ▁of ▁Ga ol ing ▁County ▁( 高 <0xE9> <0x99> <0xB5> , ▁in ▁modern ▁X i ' an , ▁Sh a an xi ),