집현전
Jang's fame gained him entry into the royal court at Hanseong (present-day Seoul), where selected commoners displayed their talents before the king and his advisers. Jang met Sejong's expectations in crafts and engineering, and allowed Jang to work as a government official in the palace. The talented scientists recruited under Sejong's new program worked at the Hall of Worthies (집현전; 集賢殿; Jiphyeonjeon).