Guazhu Lake is located in the northeast of Keqiao China Textile City. This renovation is mainly to optimize and upgrade the existing drainage facilities, landscape, lighting and others combined with the construction of sponge city. 

The existing 23 rainwater outlets have been purified through ecological filters, ecological floating beds, and the monitoring points for rainfall, flow and water level have been set up to establish the monitoring and evaluation system of 'sponge city'. By revitalizing the existing abandoned landscape facilities, the water quality of Guazhu Lake Area will be further improved, the demonstration and leading role will be played to promote the concept of sponge city construction.