Utilizing simulation data from the Weather Research and Forecasting Model for a convection event on 23 August 2021, the study analysis revealed that differences in pre-storm wind fields and thermodynamic conditions impeded the movement and cold pool development of the mountainous thunderstorm cluster, while the plain thunderstorm cluster experienced the opposite effect. Ultimately, the clusters merged at the mountain base, where the enhanced cold pool acted analogously to topographical features, strengthening convergence and vertical motion.