"Bitahai Nature Reserve" is located in Pudacuo National Park, Shangri-La, Yunnan Province. It is located on the plateau of the upper reaches of the Hengduan Mountains, which is a transition zone from the Qinghai-Tibet Plateau to the Yunnan Plateau. The Bitahai Sea is surrounded by mountains, green trees and snow peaks. For the fault structure lake, the lake is in the shape of conch, the lake is 3,539 meters above sea level, about 3,000 meters long, the average width of the north and south is 700 meters, the widest is about 1,500 meters, and the narrowest is about 300 meters. It is composed of snow-capped mountains and streams, the lake is blue, the snow-capped trees reflect the lake, the clear and intoxicating, there are islands in the lake, growing spruce, fir, alpine pine, alpine, white scorpion, willow and so on. The "Rhododendron drunk fish" wonder is from here. Due to the relatively low altitude, it is usually easier to walk the Bita Sea than the Duhu Lake. If you encounter ecological maintenance of the protected area, Bita Sea will be suspended for visitors. Location: Inside the Shangri-La Pudacuo National Park, Diqingzhou, Yunnan.