▁usually ▁wore ▁red ▁ro bes ▁ ▁King ' s ▁private ▁guard ▁The ▁King ' s ▁private ▁guard ▁consisted ▁of ▁personal ▁body gu ards ▁of ▁king . ▁ ▁They ▁wore ▁black ▁ro bes . ▁ ▁Central ▁army ▁The ▁central ▁army ▁consisted ▁of ▁ 5 0 0 0 0 ▁troops . ▁ ▁They ▁usually ▁wore ▁green ▁ro bes . ▁ ▁They ▁were ▁commanded ▁by ▁gener als ▁appointed ▁by ▁the ▁king . ▁ ▁Foreign ▁affairs ▁▁ ▁After ▁establish ing ▁new ▁dynast y , ▁Y i ▁requested ▁the ▁new ▁nation ▁to ▁enter ▁the ▁Imperial ▁trib ut ary ▁system ▁under ▁the ▁M ing ▁D ynast y ▁in ▁order ▁to ▁establish ▁economic ▁relations . ▁Later , ▁Jose on ▁requested ▁the ▁M ing ▁to ▁fight ▁together ▁against ▁Japan . ▁The ▁relationship ▁with ▁M ing ▁was ▁sust ained ▁until ▁ 1 6 3 7 . ▁ ▁Society ▁▁ ▁The ▁exact ▁population ▁figures ▁of ▁Jose on - era ▁Korea ▁are ▁disput ed ▁as ▁government ▁records ▁of ▁households ▁are ▁considered ▁un re li able ▁in ▁this ▁period . ▁Between ▁ 1 8 1 0 ▁and ▁ 1 8 5 0 , ▁the ▁population ▁decl ined ▁approximately ▁ 1 0 % ▁and ▁remained ▁stable . ▁Before ▁the ▁introduction ▁of ▁modern ▁medicine ▁by ▁the ▁Korean ▁Empire ▁government ▁in ▁the ▁early ▁ 2 0 th ▁century , ▁the ▁average ▁life ▁expect ancy ▁for ▁pe asant ▁and ▁common er ▁Korean ▁males ▁was ▁ 2 4 ▁and ▁for ▁females ▁ 2 6 ▁years . ▁ ▁Jose on ▁Korea ▁installed ▁a ▁central ised ▁administrative ▁system ▁controlled ▁by ▁civil ▁b