Belvedere of Pleasant Sounds (Changyin ge)
The pavilion consists of three floors. From the top to the bottom, they are named "Fortune (fu)", "Wealth" (lu), and "Longevity"(shou). At the ground floor, five ground tunnels leading to the basement and three skylights piercing the "Wealth" floor. Pulleys are installed near or under these equipment, by which actors and actresses could ascend and descend freely as angels or ghosts during the opera. The pavilion could hold a thousand people. When a full-length opera was on, actors and actresses occupied all these three floors. Opposite to the Pavilion of Pleasant Sounds is the Hall for Viewing Opera (Yueshi lou) where owners of the Forbidden City enjoyed the performance.