Read the bio below and try to give details on yu deuk-gong 's: - hangul - mr - rr - hanja Bio: yu deuk-gong -lrb- 1749 -- 1807 -rrb- was a korean scholar during the joseon dynasty . he is remembered today for his work in recovering the history of balhae , which had not generally been considered part of korean history before his time .
- hangul is - mr is ryu tukkong- rr is yu deuk-gong- hanja is