The Hall of Perfect Harmony is the smallest of the three main pavilions in the Forbidden City, although it still measures an impressive 580 square meters. As you can see, it is a square, pagoda-shaped structure, with a single-vault roof topped with a golden pinnacle. The emperor mainly used this room to rest and prepare for ceremonies before proceeding to the Hall of Supreme Harmony and before entering the Temple of Heaven, checking the sacrificial offerings he was to take with him.
In the richly decorated interior, there is a particularly interesting pair of gold unicorns standing at either side of the throne in the center. Called "luduan" in Chinese, the unicorns were mythological creatures believed to speak several languages and capable of traveling 9000 kilometers in a single day. The statues of these creatures, used as sandalwood burners, were placed around the throne as a symbol of the emperor’s great wisdom and intelligence. The two chairs next to the throne were used to transport the emperor within the Forbidden City.