[The Introduction] The current landscape of Tong Yuan Ju area in Chongqing is gradually formed from the collectivism period of China. The unique city forms, spatial patterns and building structures were also established under the predominant influence of the special ideology of that period. We name the knowledge related to the architecture of that period as ‘The architecture of collectivism’. As great changes have occurred in China within the last 30 years, both the collectivism-architecture and the buildings at Tong Yuan Ju will fade away soon as a result of the great reformation. We hereby plan to record the architectural elements of Tong Yuan Ju in terms of different forms of land use, buildings and structures as a sample of the architecture during the collectivism period, and this is the central objective of this mapping project at Tong Yuan Ju. The project of mapping Tong Yuan Ju is one of the literature programs in the ‘T1 project’. It will be led by architects, and professional architectural method will be used for investigating and describing. The expected output will be in the form of literature. This project aims at recording the architectural elements of Tong Yuan Ju area, which involves city forms, space patterns and construction methods, etc. All of these elements are uniquely formed during the special period and should be properly recorded. It is obviously that the achievements of this project will serve as a valuable basis of future works. 重庆铜元局片区的现状起源于中国集 体主义时期。集体主义时期在中国现代史 中的特殊性也直接塑造了这一时期城市形 态、空间模式、和建筑建造的特殊性。我 们将这一时期和建筑空间相关的知识称作 “集体主义时期的建筑学”随着中国城市 和社会形态的巨变,“集体主义时期的建 筑学”将永久性的退出历史,正如铜元局 片区即将面临的拆迁。将铜元局作为“集 体主义建筑学”的一个文本,并记录和整 理其关于空间的知识是我们这一阶段工作 的一项主要任务,由此,“铜元局测绘项 目”得以展开。 铜元局测绘项目是“T1 project”中 由建筑师介入,以建筑学描述方式为工作 方法的一个文献项目。这个项目旨在记录 铜元局区域的城市形态、空间模式、构造 方式等这些独特历史时期的建筑学知识; 亦是将即将消失的铜元局空间文献化。这 个项目的成果将作为基础,在相继的活动 和作品中展开讨论以及再创作。