National Treasure No. 225 Inside Changdeokgung Injeongjeon Hall, which contains the authority and dignity of the Joseon royal family. Opening period: April 4, 2013 to October 31, 2013 / 4 times a week. Opening hours: 11:00, 11:30, 14:00, 14:30 (approximately 20 minutes per episode) ※ To restrict the