▁Wang ▁F uz hi . ▁He ▁also ▁offered ▁ 3 0 0 ▁silver ▁ta els ▁to ▁Li ▁Sh an lan ▁for ▁the ▁printing ▁of ▁Ze ▁G ux i ▁Z hai ▁Su an x ue ▁( <0xE5> <0x89> <0x87> 古 <0xE6> <0x98> <0x94> <0xE9> <0xBD> <0x8B> 算 學 ), ▁a ▁book ▁on ▁mathematics ▁written ▁by ▁Li . ▁In ▁ 1 8 8 2 , ▁when ▁he ▁lear nt ▁that ▁P eng ▁Y ul in ▁wanted ▁to ▁establish ▁a ▁Ch u ans han ▁Academy ▁in ▁H eng y ang , ▁he ▁don ated ▁his ▁personal ▁copy ▁of ▁the ▁Ch u ans han ▁Y ish u ▁and ▁provided ▁fund ing ▁to ▁help ▁P eng ▁start ▁the ▁school . ▁ ▁In ▁ 1 8 6 7 , ▁when ▁the ▁N ian ▁Reb ell ion ▁was ▁on going , ▁Z eng ▁and ▁Li ▁Hong z hang ▁adopted ▁different ▁approaches ▁towards ▁attack ing ▁the ▁reb els . ▁Z eng ▁ordered ▁Ba o ▁Ch ao ▁to ▁lead ▁his ▁unit ▁to ▁attack ▁the ▁reb els . ▁Li u ▁M ing ch uan ▁was ▁defeated ▁but ▁was ▁saved ▁by ▁Ba o ▁Ch ao . ▁Li u ▁then ▁pushed ▁the ▁bl ame ▁for ▁the ▁defeat ▁to ▁Ba o ▁and ▁Li u ▁Sh eng za o , ▁resulting ▁in ▁the ▁latter ▁two ▁being ▁pun ished . ▁Z eng ▁was ▁also ▁forced ▁to ▁ret ire , ▁ost ens ibly ▁on ▁the ▁grounds ▁of ▁ill ness , ▁but ▁actually ▁as ▁pun ishment ▁for ▁his ▁failure . ▁In ▁ 1 8 7 5 , ▁Z eng ▁returned