The Air Quality Task Force of Energy Foundation China pursues world-class air quality and carbon neutrality for China by implementing a co-control strategy for air and climate pollutants. The task force supports cross-cutting research on air quality, climate change, health, energy, the economy, and urban-rural coordination topics. To enhance communications among stakeholders from the various fields, we have produced this progress briefing series, which regularly introduces the task force’s project findings, air quality analysis, new developments in criteria and carbon pollutant reductions around the world, and pertinent events and activities. We hope that this briefing series can help provide scientific evidence, as regulators and research institutions study, formulate, and implement policies and measures on the coordinated management of air quality and greenhouse gases.