▁independent ▁manner ▁from ▁the ▁imperial ▁government . ▁ ▁It ▁was ▁said ▁that ▁despite ▁T ian ▁Bu ' s ▁youth , ▁he ▁was ▁able ▁to ▁see ▁that ▁T ian ▁Ji ' an ' s ▁position ▁was ▁not ▁secure ▁and ▁coun se led ▁his ▁father ▁to ▁eventually ▁declare ▁loyal ty ▁to ▁the ▁imperial ▁government . ▁ ▁Service ▁under ▁T ian ▁Hong zh eng ▁ ▁In ▁ 8 1 2 , ▁after ▁T ian ▁Ji ' an ▁died , ▁his ▁young ▁son ▁T ian ▁H ua ij ian ▁initially ▁became ▁nom inal ▁r uler ▁of ▁We ib o , ▁without ▁imperial ▁san ction , ▁but ▁soon , ▁the ▁soldiers ▁mut in ied ▁and ▁supported ▁T ian ▁X ing ▁as ▁their ▁leader . ▁ ▁T ian ▁X ing ▁subsequently ▁submitted ▁to ▁imperial ▁orders ▁and ▁was ▁made ▁the ▁military ▁governor ▁of ▁We ib o ▁and ▁was ▁subsequently ▁renamed ▁T ian ▁Hong zh eng ▁by ▁then - r uling ▁Emperor ▁X ian z ong . ▁ ▁T ian ▁Bu ▁served ▁under ▁his ▁father ▁and ▁commanded ▁the ▁el ite ▁troops ▁of ▁We ib o . ▁ ▁In ▁ 8 1 5 , ▁when ▁imperial ▁troops ▁were ▁in ▁the ▁middle ▁of ▁a ▁campaign ▁against ▁the ▁war l ord ▁Wu ▁Y uan ji , ▁who ▁controlled ▁Z hang yi ▁Circ uit ▁( <0xE5> <0xBD> <0xB0> 義 , ▁head qu arter ed ▁in ▁modern ▁Z hum ad ian , ▁Hen an ), ▁T ian ▁Hong zh eng ▁sent ▁T ian ▁X ing ▁to ▁aid ▁the ▁campaign , ▁command ing ▁ 3 , 0