This article revisits Japan's empire-building in Northeast China through the construction of and reactions to the Daidō hiroba 大同広場 (Plaza of Great Unity) in Shinkyō, showing how Chinese and Japanese challenged the top-down attempt for building a totalitarian empire. These re-interpretations and definitions of Hiroba unveiled the diversity, dynamics, and complexity of Manchukuo society that cannot be fully grasped in a nation-state framework. Moreover, their voices challenged the previous depiction of such imperial monumental space as the physical materialization of imperial governmentality but a contested site where individuals challenged the official vision of Manchukuo. This article examines documents ranging from governmental documents to works of literature in both Chinese and Japanese. Compared to Japanese planners' vision of the Hiroba as a site of governmentality, visitors and local residents held differing interpretations of this space: some Japanese disapproved the attempt to reframe the urban space by a totalitarian regime, and many Chinese redefined the meaning of this “utopian” urban space to accord with their own tradition and everyday life.