Introduction to Bita Sea: Bita Sea is a fault structure lake with a conch shape, 3000 meters long, 700 meters wide, 3504 meters above sea level, 40 meters deep and covering an area of 60 hectares. "Bita" in Tibetan means a place where trees become felt. The water of Bita Sea is formed by melting snow from snow-capped mountains and streams. At night, the petals of the azaleas fall and are accidentally eaten by fish in the lake. Since the azaleas contain trace amounts of neurotoxins, fish will float on the water after eating too much. This is the famous local spectacle "the cuckoo fish". Take a boat to the island. The path to the island is winding and winding, with fragrant grass, fragrant flowers, chirping of birds, and the sound of nature reminding people of Penglai Fairy Island.