What relationship can a cemetery have with the city? Since the first garden cemetery was built in the early nineteenth century, this concept spread rapidly throughout Europe. Until now garden cemetery is still the common form of cemeteries in European cities. With the concept of garden cemetery, cemeteries exist in the urban fabric as a public space represented by nature and landscape attributes. The emergence of this relationship is closely related to the demand for burialbased burial forms. For a long time, this relationship has given the cemetery a natural and green identity, which is also the common perception of the cemetery among citizens. Has this relationship changed? In the context of the Complex Project, Building Body Berlin course, this research design will focus specifically on Berlin, Germany. The existence of the German cemetery law, known as “Der Friedhofszwang“, makes cemetery burial mandatory in Germany. Along with this law of compulsory burials, the demand for cemeteries has a huge quantitative basis in Germany. However, according to the research of cemetery development plan of Berlin in 2006, since the end of the 20th century, the cemeteries (mainly garden cemetery) in Berlin have roduced a large amount of vacancy. These idle cemeteries consume a lot of operating and maintenance costs. This phenomenon does not mean that the demand for cemeteries has declined. On the contrary, the demand for cemeteries in Berlin is still increasing. Moreover, with the aging of the population in Germany, the death rate and the number of deaths have risen, and Berliners’ demand for cemeteries will continue to increase in the future. The increase in demand for cemeteries does not appear to coincide with the reduction in cemetery size. It is this inconsistency that helps us see the problem for what it is. The reason for this lies in the transformation of the form of burials. As cremation has grown in popularity, people have increasingly turned to other forms of burial, such as burial of ashes and placement in columbariums. According to statistics, the proportion of cremation in Germany has reached more than 75%. Compared with the traditional form of burying coffins, the land area required for the new burial form represented by cremation is greatly reduced. Statistics show that compared with the average area of 12 square meters in traditional burial coffins, the average area of urns placed in columbariums is only 0.5 square meters. This huge change has also led to a continuous reduction in the core space actually used in the cemetery. Therefore, more and more cemeteries can no longer assume the role of urban public green space due to the reduction of the core use area. Although this phenomenon of quantitative change has not accumulated to produce qualitative change, we can still see the urgent need for the transformation of the cemetery. So how can the cemetery provide a new value as an urban public space? This research design process will ask questions around this question and offer a possible solution.

In February 1950, Liang Sicheng and Chen Zhanxiang jointly proposed the "Proposal on the Location of the Central People's Government's Administrative Center Area", which is known as the Liang Chen Plan. Although this scheme has not been implemented, it is often mentioned. The designers have objective understandings of Beijing's urban functions, development conditions, and spatial structure. This scheme once gave Beijing the opportunity to move towards a completely different direction from now.