Nanhu Lake, a prominent landmark in Jiaxing, is noted for its stunning scenery and serves as a water storage hub for major local rivers. Because the rivers extending in all directions converge here, the action of guarding the clear water of Nanhu Lake has become a key step in activating the ecological genes of the city.

Nanhu Lake has a perennial water surface area of 520,000 ㎡and a storage capacity of 2,800,000 m³. In the project of Nanhu Lake's water quality improvement (ecological water rehydration), CSCEC has built “a super water purifier” to clean the water quality of Nanhu Lake through cutting-edge techs with independent intellectual property rights.

Furthermore, to generate the self-purification and self-repair of the Lake, a beautiful underwater forest was made by the adoption of water purification facilities and ecological restoration technology.