Seoninmun located south of Honghwamun Gate, the main entrance of Changgyeonggung Palace, was used by the officials working in various government agencies in the palace. The gate is also related with several tragic incidents the royal family of Joseon had to endure. King Yeonsangun (r. 1494-1506), for example, left the palace through this gate when he was sent into exile following the Restoration of King Jungjong in 1506. It was also through this gate that Royal Lady Huibin Jang (?-1701) left the palace after she was punished to death for her treacherous act that led to the death of Queen Inhyeon (1667-1701). The tragic death of Crown Prince Sado (1735-1762) took place in the prince’s residence inside the gate.