A review of this book chapter from UrbaChina, European project: "The last part of this book is entitled “architectural expressions” and focuses on both old and new buildings in Chinese cities (Shanghai’s lilong and Hong Kong’s shopping malls).Like Lena Scheen, Non Arkaraprasertkul (Harvard University) focuses on Shanghai’s typical lane houses: the “longtang” or “lilong”. The author does not call for the preservation of the “lilong” at all costs. Indeed, he presents us with the drawbacks of these traditional houses, such as the poor conditions they offer to their inhabitants and the need for local authorities to increase the density of Shanghai’s city centre. However, he regrets that the social societies and residents are too often excluded from the process of decision making in matters of “lilong” preservation. He also stresses the informal heritage that the lilong offer. When a decision is made in favour of preservation, it should not only concern the buildings, but also the residents’ social life. The author calls for more research to be done on the lilong."