This study examines whether China’s Industrial Internet pilot policy (2017–2023) enhances firm innovation and explores the underlying mechanisms. Exploiting the staggered rollout of the policy across provinces as a quasi-natural experiment, we find that Industrial Internet adoption significantly increases firms’ innovation output. Mechanism tests show that the policy promotes knowledge accumulation, strengthens innovation persistence, and improves human capital allocation. We also document positive economic consequences, as treated firms earn higher returns to innovation. The effects are stronger for capital-intensive firms, those located in regions with advanced digital infrastructure, and firms undertaking joint or substantive innovation activities. Overall, the evidence highlights the Industrial Internet as an effective catalyst for firm innovation by deepening R&D capability and facilitating cross-industry knowledge flows.

The side effect of automation on the economy has been discussed frequently, but little is known regarding its political consequences. This paper examines the causal effect that automation induces political costs for the local government. By combining the national individual-level panel data of political trust with the prefecture-level robot exposure rate in China biennially during the period 2012– 2018, we find that the development of automation would incur lower political trust in the Chinese local government. Furthermore, the impact may result from the risk of unemployment, intensified pessimism about local government, higher downside risk, and declining group participation, providing a few channels for the automation process to affect citizens’political trust. This paper provides empirical evidence for the impact of automation and the source of political legitimacy, contributing to the literature about automation by emphasizing the crucial role of government in coping with the technological progress and making good use of endogenous creative destruction.