Blue Moon Valley, formerly known as the Blue Moon Valley "Baishui River", is also known as Baishui River. On a sunny day, the water is blue and the valley is crescent-shaped. Seen from a distance, it looks like a blue moon embedded at the foot of Yulong Snow Mountain, hence the name Blue Moon Valley. Baishui River is called Baishui River because the silt at the bottom of the lake is white, and the water will turn white when it rains.