Recent work "Auditoriums" of Shao Yinong and Mu Chen collected the approval of all. These spaces, formerly eminently political, fell in disuse at the commercial era of today. Dedicated to the demolition or transformed into study halls, they lost their solemnity of yesterday. However, always carrying memories, they are rich in historical and cultural information, true museographic spaces details of the past. It is at the time when these places lost their importance and their prestige that with an infinite patience, Shao Yinong and Mu Chen undertook to traverse the country, in order to draw up their portrait. Of these spaces built in different places, at different times, rich of symbolism and complex social and political cultural contents, the authors know how to seize the heart of them. Historical informations as well as the photographers' point of view, emanating from this work, cannot leave indifferent. The glance of the authors, because direct and free from any demagogy, returns account with accuracy of the current fate of these auditoriums. While returning to a simple photographic mode, Shao Yinong and Mu Chen expose with rigour the vicissitudes of history and the changes in China.