Introduction to the Three Pools: The Three Pools of Baligou are located in the river ditch where two peaks face each other at the mouth of Shimengou. They are called the First Pool, the Second Pool and the Three Pools from the inside out. Also known as White Dragon Pool, Yellow Dragon Pool and Black Dragon Pool. There were originally Sanxian Palace, Chaoyang Palace, etc. built on the pond. The palaces and pavilions were majestic, and the temples were reflected in the pond, like a crystal palace. However, due to some special reasons, only one stone tablet remains.