(Palace of Heavenly Purity) is the Imperial Palace imperial palace main hall, imperial palace one of latter three palaces. Surface extravagant 9, depth 5, the height 20 meters, the double-eaved roof traditional Chinese-style roof with four surfaces sloping away from ridgepole goes against. Palace center has the throne, two have the heated room. Did the clear palace to build in the Ming Dynasty Yunglo 18 years (in 1420), because the Ming and Qing Dynasties two generations several times were burnt once down reconstruct, the existing construction (in 1798) constructed for the Qing Dynasty Jiaqing three years.
