▁need ▁to ▁improve ▁labor ▁product ivity . ▁New ▁material ▁in cent ives ▁and ▁bonus ▁systems ▁were ▁introduced . ▁R ural ▁mark ets ▁s elling ▁pe as ants ' ▁hom eg rown ▁products ▁and ▁the ▁sur plus ▁products ▁of ▁communes ▁were ▁rev ived . ▁Not ▁only ▁did ▁rural ▁mark ets ▁increase ▁agricult ural ▁output , ▁they ▁stim ulated ▁industrial ▁development ▁as ▁well . ▁With ▁pe as ants ▁able ▁to ▁sell ▁sur plus ▁agricult ural ▁yields ▁on ▁the ▁open ▁market , ▁domestic ▁consumption ▁stim ulated ▁industrial ization , ▁and ▁also ▁created ▁political ▁support ▁for ▁more ▁difficult ▁economic ▁re forms . ▁ ▁D eng ' s ▁market ▁social ism , ▁especially ▁in ▁its ▁early ▁stages , ▁was ▁in ▁some ▁ways ▁parallel ▁to ▁Len in ' s ▁New ▁Econom ic ▁Policy ▁and ▁B uk har in ' s ▁economic ▁policies , ▁in ▁that ▁they ▁all ▁for es aw ▁a ▁role ▁for ▁private ▁entrepr ene urs ▁and ▁mark ets ▁based ▁on ▁trade ▁and ▁pr icing ▁rather ▁than ▁government ▁mand ates ▁of ▁production . ▁An ▁interesting ▁an ec dot al ▁episode ▁on ▁this ▁note ▁is ▁the ▁first ▁meeting ▁between ▁D eng ▁and ▁Arm and ▁Ham mer . ▁D eng ▁pressed ▁the ▁industrial ist ▁and ▁former ▁invest or ▁in ▁Len in ' s ▁Soviet ▁Union ▁for ▁as ▁much ▁information ▁on ▁the ▁NE P ▁as ▁possible . ▁ ▁Con current ▁with ▁economic ▁re forms , ▁China ▁began ▁a ▁major ▁crack down ▁on ▁crime ▁in ▁what ▁became ▁known ▁as ▁" St rike ▁Hard " ▁campaign s . ▁These ▁have ▁been ▁launched ▁period