▁response , ▁the ▁next ▁k ings , ▁Ye ong jo ▁and ▁Je ong jo , ▁generally ▁purs ued ▁the ▁Tang py e ong cha ek ▁- ▁a ▁policy ▁of ▁maintain ing ▁balance ▁and ▁equality ▁between ▁the ▁fa ctions . ▁ ▁The ▁two ▁k ings ▁led ▁a ▁second ▁r ena issance ▁of ▁the ▁Jose on ▁dynast y . ▁Ye ong jo ' s ▁grand son , ▁the ▁en light ened ▁King ▁Je ong jo ▁en act ed ▁various ▁re forms ▁throughout ▁his ▁reign , ▁not ably ▁establish ing ▁Gy uj ang g ak , ▁a ▁royal ▁library ▁in ▁order ▁to ▁improve ▁the ▁cultural ▁and ▁political ▁position ▁of ▁Jose on ▁and ▁to ▁rec ruit ▁gift ed ▁officers ▁to ▁run ▁the ▁nation . ▁King ▁Je ong jo ▁also ▁spe ar head ed ▁bold ▁social ▁initi atives , ▁opening ▁government ▁positions ▁to ▁those ▁who ▁would ▁previously ▁have ▁been ▁bar red ▁because ▁of ▁their ▁social ▁status . ▁King ▁Je ong jo ▁had ▁the ▁support ▁of ▁the ▁many ▁Sil h ak ▁sch ol ars , ▁who ▁supported ▁his ▁reg al ▁power . ▁King ▁Je ong jo ' s ▁reign ▁also ▁saw ▁the ▁further ▁growth ▁and ▁development ▁of ▁Jose on ' s ▁popular ▁culture . ▁At ▁that ▁time , ▁the ▁group ▁of ▁Sil h ak ▁sch ol ars ▁encourag ed ▁the ▁individual ▁to ▁reflect ▁on ▁state ▁trad itions ▁and ▁l ifest yle , ▁initi ating ▁the ▁studies ▁of ▁Korea ▁that ▁addressed ▁its ▁history , ▁ge ography , ▁ep ig raph y ▁and ▁language . ▁ ▁Government ▁by ▁in - law