hang ▁ch ased ▁the ▁desert ing ▁soldiers ▁on ▁horse back ▁and ▁executed ▁two ▁of ▁them , ▁forcing ▁the ▁others ▁to ▁return ▁to ▁battle . ▁Sun ▁Qu an ' s ▁forces ▁managed ▁to ▁hold ▁up ▁against ▁Z hang ▁L iao ' s ▁assault ▁that ▁day ▁despite ▁sust aining ▁heavy ▁cas ual ties , ▁but ▁eventually ▁suffered ▁a ▁cr ushing ▁defeat ▁when ▁Z hang ▁L iao ▁launched ▁a ▁surprise ▁counter att ack ▁while ▁they ▁were ▁withdraw ing . ▁Sun ▁Qu an ▁was ▁im pressed ▁when ▁he ▁heard ▁of ▁Pan ▁Z hang ' s ▁actions ▁and ▁he ▁promoted ▁Pan ▁to ▁Lieutenant - General ▁( <0xE5> <0x81> <0x8F> <0xE5> <0xB0> <0x87> 軍 ), ▁put ▁him ▁in ▁charge ▁of ▁more ▁troops . ▁and ▁ordered ▁him ▁to ▁g arrison ▁at ▁B anz hou ▁( <0xE5> <0x8D> <0x8A> 州 ). ▁ ▁Wars ▁against ▁Li u ▁Bei ▁ ▁In ▁ 2 1 9 , ▁Pan ▁Z hang ▁participated ▁in ▁a ▁campaign ▁led ▁by ▁Sun ▁Qu an ' s ▁general ▁Lü ▁M eng ▁to ▁se ize ▁control ▁of ▁J ing ▁Province ▁from ▁Gu an ▁Yu , ▁a ▁general ▁under ▁Li u ▁Bei . ▁Pan ▁Z hang ▁and ▁Z hu ▁Ran ▁blocked ▁Gu an ▁Yu ' s ▁retre at ▁routes ▁and ▁station ed ▁at ▁Ji ashi ▁( <0xE5> <0xA4> <0xBE> 石 ) ▁when ▁they ▁reached ▁Lin ju ▁County ▁( <0xE8> <0x87> <0xA8> <0xE6> <0xB2> <0xAE> <0xE7> <0xB8> <0xA3> ; ▁present - day ▁Y uan ' an ▁County , ▁H ube i ). ▁Gu an ▁Yu , ▁along ▁with ▁his ▁son ▁Gu an ▁P