ðə kˈɑːmplɛks wʌz ɛkspˈændᵻd baɪ kˈɪŋ sˈɛdʒɑːŋ ˈɑːɹ. wˈʌn θˈaʊzənd fˈoːɹhˈʌndɹɪd ˈeɪtiːn fˈɪfti hˌuː ˈɔːɹdɚd ðə kənstɹˈʌkʃən ʌv jˈoʊŋnjoʊŋdʒɪən.
The complex was expanded by King Sejong (r. 1418–50) who ordered the construction of Yeongnyeongjeon ().