High Wire provides a novel and comprehensive analysis of how China regulates its tech sector and more broadly governs its economy. It focuses on electronic platform regulation in three key areas: antitrust, data, and labor. It also explains how Chinese platforms regulate themselves outside of state control, and how the two modes--public and self-regulation--interact. Finally, High Wire shows how the current tech crackdown in China is shaping the country's transition from soft-tech to hard-tech and considers how China will regulate the rapidly expanding field of generative artificial intelligence.