Senior Engineer, Shanghai Academy of Environmental Sciences Profile / Bio Haixia Dai is a Senior Engineer at the Shanghai Academy of Environmental Sciences, where work focuses on environmental monitoring, air quality assessment, and emissions control. Dai has contributed to projects developing intelligent supervision systems for heavy‑duty diesel vehicle emissions in Shanghai, supporting urban sustainability and regulatory enforcement. This research has been shared at international knowledge‑exchange platforms, highlighting practical approaches to pollution reduction and environmental management in megacities. Materials Title Date Learning Materials Topics Construction and Application of an Intelligent Supervision System for Heavy-Duty Diesel Vehicle Emissions in Megacities: A Case Study in Shanghai 11 March, 2026 Slides Environment, Urban Development