▁X un zi ▁( c . ▁ 3 1 2 – 2 3 0 ▁B CE ). ▁ ▁And ▁( in ▁addition ▁to ▁X un ▁Z i , ▁the ▁state ▁of ) ▁Z ha o ▁also ▁had ▁G ong sun ▁Long , ▁who ▁made ▁arguments ▁about ▁the ▁similarity ▁and ▁difference ▁of ▁hard ness ▁and ▁wh iten ess , ▁and ▁the ▁say ings ▁of ▁Ju ▁Z i ; ▁( the ▁state ▁of ) ▁Wei ▁had ▁Li ▁K ui ▁( with ▁his ) ▁teaching ▁on ▁fully ▁using ▁the ▁powers ▁of ▁the ▁land ; ▁( the ▁state ▁of ) ▁Ch u ▁had ▁Sh izi , ▁Ch ang ▁Lu , ▁and ▁Yu ▁Z i ▁from ▁A ▁in ▁it . ▁Following ▁from ▁M eng ▁Z i ▁down ▁until ▁Yu ▁Z i , ▁the ▁world ▁has ▁their ▁writ ings ▁in ▁abund ance ; ▁therefore ▁( I ) ▁will ▁not ▁discuss ▁their ▁bi ograph ies . ▁( tr . ▁Fischer ▁ 2 0 1 2 : 7 9 4 – 7 9 7 ) ▁▁ ▁The ▁( 8 ▁B CE ) ▁B iel u ▁ ▁" Se par ate ▁Records " ▁was ▁a ▁detailed ▁bibli ography ▁of ▁hold ings ▁in ▁the ▁Imperial ▁Library , ▁including ▁the ▁Sh izi . ▁It ▁was ▁begun ▁by ▁the ▁imperial ▁li br arian ▁Li u ▁X i ang , ▁and ▁after ▁his ▁death , ▁was ▁completed ▁by ▁his ▁son ▁Li u ▁X in . ▁Although ▁this ▁early ▁library ▁catalog ▁is ▁no ▁longer ▁ext ant , ▁there ▁are ▁two ▁surv iving ▁B iel u ▁fragments ▁that