Introduction to Haixin Mountain: Located slightly south of the center of Qinghai Lake, it is 2.3 kilometers long, about 800 meters wide, and 7.8 meters above the lake surface. It is a granite that stands out in Qinghai Lake. The top of the mountain is 77 meters above the lake level. Affected by the lake water, the edges of the island are mostly cliffs. There are temples built on the mountains and rivers, and the buildings blend with the scenery of lakes and mountains. There is a clear spring on the island. In summer, it is green and full of mountain flowers. It is suitable for raising horses. It has been famous for producing "dragon colts" since ancient times.