The nation-state is as much a narrative and ideational project as it is a spatial-territorial one. In the People’s Republic of China, Xi Jinping’s calls to “revitalize” China’s traditional culture, “Sinicize” religions, and “rejuvenate” the Chinese nation reflect a broader effort to reframe the national narrative and strengthen Communist Party control. This article examines the implications of Xi’s revisionist nationalism for China’s fifty-five minority nationalities, in particular the Hui, one of ten Muslim minority groups. It does so by analyzing the rise and demise of World Muslim City (WMC), a development project in western China that mobilized Hui identity and traditions for economic and diplomatic purposes. WMC was facilitated by a multicultural national narrative and by a fragmented authoritarian political system that for many years fostered policy improvisation, and deviation, at the local level. Its suspension underscores the increasingly anti-Muslim, anti-religious tenor of PRC policy, as evidenced by the Sinicization campaign that was a proximate cause of WMC’s demise. Its demise also highlights ongoing efforts to reassert CCP control over government, business, and the Party’s own rank-and-file. The fate of WMC furthermore reveals the spatial dimensions of Sinicization, and of Chinese cultural governance past and present. To paraphrase theorist Henri Lefebvre, Sinicization entails “spatial practices” that impose Xi-ist “representations of space” on lived “representational spaces,” from mosques and businesses to theme parks and luxury resorts.