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Last week, a Shanghai-based company built 10 « houses » using a 3d printer in only one day.This extraordinary new construction method may not entirely solve housing issues in China, -many of them are related to the status of land, not to construction price-. Moreover, this can also be regarded as a good marketing operation for the building company. Actually, we still don’t know how livable these « houses » really are.But this process may undoubtedly revolutionize the way houses will be built in the future. Firstly, these houses are made of recycled materials and so can be considered as green houses. Moreover, by using this method, construction defects might no longer happen as construction models will be optimised.With this experience, we have surely entered a new era where the whole construction industry might be rethought.Pictures available on Xinhua.&#160;