Introduction to Dicuiyan: Dicuiyan is a treasure-shaped building made of stacked Taihu stones. Its high level of design and exquisite masonry technology are unique to Prince Gong's Mansion Garden. There is a winding path to the east and west leading to the top of the rockery. At the top of the path is a water tank with a hole. The servants store water in the tank. When summer and autumn are hot and humid, green moss grows between the stone walls. The stone is yellow, the moss is green, and the moss is yellow. It is green and green, so it is called "Dicuiyan". There is a small rectangular pool under the rock, which was originally connected to the water of Fangtang. There are three groups of stacked stones in the pool, which mean the three fairy islands of Penglai, Fangzhang and Yingzhou.