▁c ash ▁co ins ▁issued ▁by ▁the ▁Great ▁Sh u ▁Kingdom : ▁ ▁Southern ▁Song ▁dynast y ▁▁ ▁Under ▁the ▁Southern ▁Song ▁dynast y ▁it ▁became ▁custom ary ▁to ▁add ▁the ▁date ▁of ▁issue ▁on ▁the ▁reverse ▁of ▁the ▁coin ▁and ▁as ▁co pper ▁short ages ▁and ▁phen omena ▁known ▁as ▁" currency ▁fam ines " ▁( <0xE9> <0x8C> <0xA2> <0xE8> <0x8D> <0x92> ) ▁pl ag ued ▁the ▁land ▁both ▁iron ▁c ash ▁co ins ▁and ▁paper ▁money ▁( in ▁the ▁form ▁of ▁J ia oz i , ▁Gu an zi , ▁and ▁Hu izi ▁notes ) ▁became ▁more ▁common ▁leading ▁to ▁a ▁decl ine ▁of ▁the ▁production ▁of ▁bronze ▁coin age . ▁ ▁List ▁of ▁c ash ▁co ins ▁produced ▁by ▁the ▁Southern ▁Song ▁dynast y : ▁ ▁The ▁Southern ▁Song ▁dynast y ▁General ▁Li u ▁Gu ang sh i ▁( 劉 光 世 ) ▁also ▁cast ▁special ▁c ash ▁co ins ▁with ▁the ▁ins cription ▁" Z ha ona ▁X in ba o " ▁( <0xE6> <0x8B> <0x9B> <0xE7> <0xB4> <0x8D> 信 <0xE5> <0xAF> <0xB6> ) ▁to ▁rec ruit ▁Jin ▁soldiers ▁and ▁allow ▁them ▁to ▁defect ▁to ▁the ▁Song ▁Army , ▁however ▁these ▁wer en ' t ▁meant ▁for ▁circul ation . ▁ ▁Northern ▁L iao ▁dynast y ▁▁ ▁A ▁number ▁of ▁c ash ▁co ins ▁were ▁reported ▁to ▁have ▁the ▁reign ▁titles ▁of ▁Northern ▁L iao ▁dynast y ▁em per ors , ▁however ▁as ▁no ▁historical ▁records ▁mention ▁them ▁the ▁authentic ity ▁of ▁these ▁co ins ▁has ▁been ▁called ▁into