Introduction to Xuanyuan Lake: Xuanyuan Lake is located between the Three Ancestor Hall of China and the ruins of Huangdi City, and is formed by the Yellow Emperor Spring. In 1958, artificial dams were built to increase the water storage area. The current lake surface is 65,000 square meters, the lake water capacity is 1.08 million cubic meters, and the deepest point is 12 meters. Stone embankments with a height of 16 meters are built on the east and north sides of the lake. The stone dam slowly goes deep into the lake. The lakeside is lush with poplars and willows, making it an ideal place for tourists to stop, rest and fish in the water.