Apart from rivers, and channels cut to divert water through cities, many cities were dotted with lakes and ponds large and small. These not only gave people somewhere to relax away from the noise of the city, but also provided sources of water.
除自然河流或渠水穿城而過，許多城市則散佈著大大小小的湖泊、水池，不僅人們在市囂之外，有了紓解之處，也可以做為水源。