Given the question: What type of details about jeong in-ji can be gathered from the following bio? Bio: jeong inji -lrb- , december 28 1396 -- november 26 1478 -rrb- was a korean neo-confucian scholar , historian , and , during the reign of king sejong the great , vice-minister of education . he was nicknamed hakyeokjae -lrb- -rrb- . he is perhaps best known for having written the postscript of the '' hunmin jeongeum haerye '' , the commentary on and explanation of the hangul invented by king sejong in 1443 . he also contributed to the '' goryeo-sa '' , the official history of korea , and the '' yongbi eocheon-ga '' -lrb- -rrb- . his second son , jeong hyun-jo , was married to princess uisuk , king sejo of joseon ' s second daughter .
The answer is:
- mrho - hangulho - rrja - hanjaho - hangulja - mrja - hanjaja - rrho - hangul - mr - rr - hanja