Introduction to Dongliu Shilou: The tower on the mountain east of the reservoir dam is called Dongliu Shilou. Because it is located on the east side of Xishuiyu Pass, it is said that when the Great Wall was being built, flowstones fell from time to time, so Local people call this building the Dongliushi Building. It is the first of the peaks in the scenic area. You can have a panoramic view of the scenic area by climbing up the tower and looking into the distance.