Introduction to the Prince's Palace: The Prince's Palace is located on a stone flat of about 10 square meters at the top of Luya Mountain. It is a stone-based and stone-walled building. The door of the palace opens to the north, with three characters "Prince Hall" carved into the stone on the door, and two characters "Buddha" carved into the walls on both sides, which is neat and majestic. According to legend, this palace was built in memory of Zhu Yuanzhang's 18th son.