Introduction to Stone River: is one of the water sources of the Pearl River. The river valley is 6.5 kilometers long. Water flows continuously all year round. The water quality is pure and reaches the national Class 1 quality standard. The springs and waterfalls flowing along the valley are either like flying snow and cirrus clouds, spraying pearls and splashing jade, or like thousands of dendrobium pearls pouring in the sky. Whenever a flash flood breaks out, the sound is like thunder and can be heard for miles.