In Shanghai, even more than elsewhere, mutation of the city is permanent. Never still, the metropolis moves inexorably at high speed toward its future. I wanted to represent in one overview the different mutations that Shanghai could know, if it chooses the path of sustainable development and opted for a partnership with the living. This would allow its residents to find quality of life of a natural environment in the middle of an urban area. To represent the city in four dimensions is one of my constant concerns. This representation of a gradual change, on a century, spread over a time slider, is another step in my research to approach the future of cities.