Entering the East Tower Gate of the main entrance of the palace, you can see a bright red small pyramid-shaped building in the center of the palace. This is an empty palace built in the early 11th century. The correct pronunciation is Pi Mei'an, Akaha, which means a palace in the sky and a pavilion in the sky. There is an old legend here. In the tower of the air palace, there is Naga, a serpent spirit with nine heads. The snake appeared in front of the king every night as a beautiful woman. The king and queen had sex with the snake before they went to bed. The king was convinced that if he neglected the night, his life would be shortened. So even the princes are forbidden to enter, and only the king goes there every night. The air palace rushed to build a small palace on the base of three layers of laterite. Near the top, there was a corridor with elephant stone statues standing at the four corners of the base, but the damage was serious. The whole palace was barred from entering and could only be seen from afar.