The concept of grey zones in cities has inspired my inspiration for the creation of gray zones, that is, to provide people with a place to rest properly under the environment which has an absence of shelter. The cities during the day have been exposed to the sun, and people can only set up their own sunshades or hide under a few large trees for shadow.The gray zone in cities is a good place to provide people with sunshades, It semi-enclosed structure of the same size, where people can get a proper rest.The light and shadow at the bottom of the zone can change at any time as the height of the sun changes, enhancing the interaction in the zone,so as to give people a feeling of comfort and relaxation.