Within this chapter, Huzhou City is employed as a case study to scrutinize the scenario of “dual attainments” within the realm of high-tech cities. Through an in-depth examination encompassing the general landscape of Huzhou City, the prevailing environmental air quality conditions, the distinctive features of atmospheric pollutant emissions, and the established deadlines for achieving air quality compliance, pathways are delineated for Huzhou City to meet air quality standards. These pathways are informed by comprehensive analyses derived from urban emission inventories and model simulations. Additionally, the chapter concurrently explores the scenario of peak carbon emissions within the context of achieving air quality standards. Model calculations suggest that achieving air quality compliance in Huzhou City necessitates notable reductions in pollutant emissions compared to 2017 baseline levels. Specifically, reductions of 26.7%, 28.6%, 10%, 28.9%, and 20% respectively for SO2, NOx, NH3, primary PM2.5, and VOCs are required, which results in simulated PM2.5 concentrations falling below 35.0 μg/m3. Furthermore, simulations indicate that by 2020, the annual average concentrations of PM2.5, PM10, SO2, CO, and NO2 will align with regulatory standards. These concentrations are estimated to reach 32.3 μg/m3, 45.6 μg/m3, 13 μg/m3, 1.2 mg/m3, and 31.4 μg/m3, respectively. Despite a 3.1% decrease compared to the 2017 baseline level, the 90th percentile of the maximum daily 8-hour O3 concentration is anticipated to exceed the standard. However, it is projected that through further coordinated measures aimed at reducing VOCs emissions, O3 levels will attain compliance by 2025. Regarding peak carbon emissions, in the scenario where air quality in Huzhou City achieves compliance by 2020, initiatives such as the closure of several cement and brick factories during 2017–2020 have resulted in a peak in carbon emissions in 2017. Subsequently, a stabilization of emissions is expected, followed by a gradual decline post-2028.