This dissertation describes the historical origins, design, implementation, and implications of the Chinese social credit system (SCS) and the data-driven governance it embodies. The SCS presents itself as a consumer credit system in name and structure, but it operates under the political logic of governing social life, facilitated by emerging technologies. Its promise lies in its ability to govern all aspects of "trustworthiness" through simple numerical values. On the surface, the state aims and can attain a clearer view of society and regulate citizens' behavior through the metric. Yet my investigation shows neither the goal nor the capacity led to increased legibility. The governed behavior is not directly available to the state, nor do those being governed simply adopt new systems imposed upon them. For the state to govern everything, it must establish connections throughout society, encompassing every individual and aspect within its network. Drawing on original ethnographic research, interviews, and archival data, this study follows the trajectory of an SCS in Meritown, a Northern Chinese city, examining how credit data is defined, collected, translated, represented, and interpreted within various social contexts. The formal state relies on diverse semi-state and social actors to operate the system, each bringing their own interests, interpretations, and practices that reshape the system across different social contexts and stages. The data produced by the system strays from its original purpose of surveilling and documenting reality as a foundation for improved governance. Instead, it is shaped by the demands for evidence of effective governance by state actors, while also being constrained by social forces. Stretching out the bureaucratic capacity, state and semi-state agencies only generate data from specific groups for selective purposes. Overreaching the state’s symbolic power, the meaning and the system and scores are constantly challenged. In other words, the data produced by the system represents a controlled environment, akin to a zoo, rather than capturing the complexity of the wild. Consequently, governing with the MSCS carries the risk of governing through simulacra, where the representation of reality precedes and suspends actual reality.