▁largely ▁independent ▁officials . ▁Office ▁of ▁C ens ors ▁( S agan won · 사 간 원 ) ▁- ▁Its ▁chief ▁function ▁was ▁to ▁rem on str ate ▁with ▁the ▁king ▁if ▁there ▁was ▁wrong ▁or ▁impro per ▁action ▁or ▁policy . ▁Import ant ▁decre es ▁of ▁the ▁king ▁were ▁first ▁review ed ▁by ▁cens ors , ▁who ▁could ▁ask ▁to ▁withdraw ▁them ▁if ▁jud ged ▁impro per . ▁It ▁also ▁issued ▁opinions ▁about ▁the ▁general ▁state ▁of ▁affairs . ▁It ▁was ▁composed ▁of ▁five ▁officials , ▁led ▁by ▁Chief ▁C ensor ▁( Da es agan · 대 사 간 ), ▁of ▁ 3 rd ▁senior ▁rank . ▁While ▁the ▁primary ▁focus ▁for ▁Office ▁of ▁Ins pect or ▁General ▁is ▁the ▁government ▁officials ▁and ▁Office ▁of ▁C ens ors ▁is ▁focused ▁on ▁the ▁king , ▁two ▁offices ▁often ▁performed ▁each ▁other ' s ▁functions , ▁and ▁there ▁was ▁much ▁overlap . ▁T ogether ▁they ▁were ▁called ▁" Y ang sa ," ▁( 양 사 ) ▁which ▁literally ▁means ▁" B oth ▁Off ices ," ▁and ▁often ▁worked ▁joint ly ▁especially ▁when ▁they ▁sought ▁to ▁reverse ▁the ▁king ' s ▁decision . ▁Office ▁of ▁Special ▁Ad vis ors ▁( H ong m ung wan · 홍 문 관 ▁ 弘 文 館 ) ▁- ▁It ▁o vers aw ▁the ▁royal ▁library ▁and ▁served ▁as ▁research ▁inst itute ▁to ▁study ▁Conf u cian ▁philosophy ▁and ▁answer ▁the ▁king ' s ▁questions . ▁Its ▁officials ▁took ▁part ▁in ▁the ▁daily ▁less ons ▁called ▁g ye ong