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The Hall of Supreme Harmony is 5 rooms wide 1 1 and deep, with a building area of 2377.00㎡ and a total height of 26.92 meters with its pedestal. It is the largest hall in the Forbidden City. It is the roof of a double-eaved palace, and there are big kisses at both ends of the roof, which are 3.40m high and weigh about 4300 K. There are 10 animals under the eaves, and the number is only available in existing ancient buildings.
Twenty-four emperors in the Ming and Qing Dynasties held grand ceremonies in the Hall of Supreme Harmony, such as the emperor's accession to the throne, marriage, conferring the queen, and being ordered to go to war. In addition, every year, the emperor receives congratulations from officials of civil and military affairs and holds a banquet in honor of princes and ministers. In the early Qing Dynasty, the Jinshi exam was also held in the Hall of Supreme Harmony. Since the fifty-fourth year of Qianlong (1789), it has been held in Baohe Hall, and Biography is still held in Taihe Hall.