In this work, aerosol direct and indirect effects via various feedback mechanisms over China are studied using WRF/Chem. Model simulations are being conducted at a horizontal grid spacing of 36-km for January, April, July, August, and October, 2008 episode to quantify the magnitudes, spatial distributions, and seasonal variation of such effects. The feedbacks of aerosols to radiation, boundary layer meteorology, and cloud formation will be analyzed. The contribution of anthropogenic aerosols to aerosol total direct and indirect effects will be estimated. The effect of emission control on air quality and climate-chemistry-aerosol-cloud-radiation feedbacks during August 2008 Olympic games will be examined by comparing simulated aerosol direct and indirect effects for July and August. The important scientific and policy implications of aerosol effects and related feedbacks on climate change mitigation and air quality improvement will be discussed.