Introduction to Ruan Dun Huan Bi: Ruan Dun is a green island located in the West Lake. From a distance, it looks like it is surrounded by jasper. The world calls it Ruan Dun Huan Bi. In the outer lake of the West Lake, located to the west of the pavilion in the center of the lake, Ruan Gongdun is one of the three islands in the lake. One of the ten scenic spots in New West Lake.