Specs - length: 55ft; width: 10ft; depth: 6ft; weight: 250 tons.
Behind the Hall of Preserved Harmony, in the middle of the stairway, is a huge piece of marble carving of nine dragons playing with pearls. It was said that a well was dug every 500 yards and water was pumped out to form icy roads in order to facilitate transportation! Thousands of men and horses and mules were involved.