▁ ▁In ▁ 2 6 2 ▁BC , ▁B ai ▁Q i ▁attacked ▁Han ▁and ▁captured ▁Y ew ang ▁( 野 王 ), ▁cutting ▁off ▁the ▁Shang d ang ▁region ▁from ▁the ▁Han ▁main land . ▁King ▁H uan hui ▁of ▁Han ▁was ▁fear ful ▁of ▁the ▁Q in ▁military ▁pro w ess ▁and ▁decided ▁to ▁conced e ▁Shang d ang , ▁but ▁the ▁local ▁command ers ▁refused ▁to ▁do ▁so ▁and ▁instead ▁surrender ed ▁the ▁region ▁to ▁the ▁state ▁of ▁Z ha o . ▁ ▁The ▁struggle ▁for ▁control ▁of ▁Shang d ang ▁triggered ▁direct ▁conflicts ▁between ▁Q in ▁and ▁Z ha o , ▁then ▁the ▁two ▁largest ▁military ▁powers ▁among ▁the ▁war ring ▁states , ▁leading ▁to ▁the ▁dev ast ating ▁Battle ▁of ▁Ch ang ping . ▁ ▁In ▁ 2 5 6 ▁BC , ▁a ▁Q in ▁general ▁named ▁J iu ▁( <0xE6> <0x91> <0x8E> ) ▁attacked ▁Han , ▁killing ▁ 4 0 , 0 0 0 ▁of ▁the ▁enemy ▁and ▁capt uring ▁Yang ch eng ▁( 陽 城 ) ▁and ▁F ush u ▁( <0xE8> <0xB2> <0xA0> <0xE9> <0xBB> <0x8D> ). ▁ ▁Two ▁years ▁later ▁in ▁ 2 5 4 ▁BC , ▁J iu ▁attacked ▁Wei ▁and ▁captured ▁W uch eng ▁( <0xE5> <0x90> <0xB3> 城 ), ▁forcing ▁Wei ▁to ▁submit ▁to ▁Q in ▁as ▁a ▁v ass al ▁state . ▁ ▁Con quest ▁of ▁Y iqu ▁ ▁Y iqu ▁( 義 <0xE6> <0xB8> <0xA0> ), ▁also ▁known ▁as ▁" the ▁R ong ▁of ▁Y iqu " ▁( 義