▁Their ▁primary ▁role ▁was ▁to ▁pass ▁down ▁royal ▁dec ree ▁to ▁the ▁minist ries ▁and ▁submit ▁pet itions ▁from ▁the ▁officials ▁and ▁the ▁popul ace ▁to ▁the ▁king , ▁but ▁they ▁also ▁ad vised ▁the ▁king ▁and ▁served ▁in ▁other ▁key ▁positions ▁close ▁to ▁the ▁king . ▁In ▁particular ▁Chief ▁Royal ▁Secretary ▁( 도 승 지 ), ▁a ▁l ia ison ▁to ▁Ministry ▁of ▁Person nel , ▁served ▁the ▁king ▁in ▁the ▁closest ▁proxim ity ▁of ▁all ▁government ▁official ▁and ▁often ▁enjoyed ▁great ▁power ▁that ▁was ▁derived ▁from ▁the ▁king ' s ▁favor . ▁Hong ▁Gu k - ye ong ▁( d uring ▁Je ong jo ' s ▁reign ) ▁and ▁Han ▁My e ong - h we ▁( d uring ▁Se jo ) ▁are ▁some ▁examples ▁of ▁chief ▁royal ▁secret aries ▁who ▁were ▁the ▁most ▁powerful ▁official ▁of ▁their ▁time . ▁Capital ▁Bureau ▁( H anse ong bu , ▁ 한 성 부 ) ▁was ▁in ▁charge ▁of ▁running ▁the ▁capital , ▁H any ang ▁or ▁present - day ▁Se oul . ▁It ▁was ▁led ▁by ▁P any oon ▁( 판 윤 ), ▁of ▁ 2 nd ▁senior ▁second ▁rank ▁equivalent ▁to ▁today ' s ▁mayor ▁of ▁Se oul . ▁Royal ▁Investig ation ▁Bureau ▁( U ige um bu , ▁ 의 금 부 ) ▁was ▁an ▁investig ative ▁and ▁enfor cement ▁organ ▁under ▁direct ▁control ▁of ▁the ▁king . ▁It ▁chief ly ▁de alt ▁with ▁tre ason ▁and ▁other ▁serious ▁cases ▁that ▁concerned ▁the ▁king ▁and ▁royal ▁family ▁and ▁served ▁to