(r. 172476) King of the Korean Chos 014F; n dynasty .
A reformer, Y 014F; ngjo reinstated the universal military service tax but then reduced it by half, making up the deficiency with other taxes. He adopted an accounting system and reduced an onerous cloth tax. Y 014F; ngjo upgraded the status of the offspring of commoners, but his social reforms could not keep up with the speed of societal change.