Sponge City is a new generation of urban stormwater management concept. It means that the city has good “elasticity” in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called a “water elastic city”. The international terminology is "Construction of low-impact rainwater system."  When it rains, it absorbs water, stores water, seeps water, and purifies water. If necessary, it “releases” the stored water and uses it.
The "Sponge City" material has been used in practical applications and has shown excellent water seepage, pressure resistance, wear resistance, non-slip, environmental protection, beauty and color, comfortable and easy maintenance, and sound absorption and noise reduction. It has become a "breathing" urban landscape road surface and is also effective. Elimination of the urban heat island effect, so that urban roads no longer heat.