Introduction to the waves and the embankment: On the water surface of Saihu Lake, when strong winds arise, the waves are strong and the waves are very strong. The effects of waves and currents in the lake are very obvious. Due to the transport of lake currents and the impact of waves, 2-3 gravel lakeshore sand embankments are continuously distributed up and down the lakeside water surface of more than 80 kilometers around the lake. Hong Liangji of the Qing Dynasty called it the "mid-wave outer sand" , "Pangzhou Susha". The gravel embankment is arc-shaped and has graceful lines. It is often kissed by light waves and warmly "embraced" by mountain waves, forming a magnificent and dynamic scene of "surging waves supporting the embankment".