This article compares how well two different methods simulate China's climate - Very-fine-resolution GCM versus RCM Dynamical Downscaling. The main goal was to see which method worked best. Here's what they found:

1. The Very-fine-resolution GCM was good at copying temperature patterns and trends, especially air temperature changes, better than the regular GCM.
2. The Very-fine-resolution GCM did a better job at capturing temperature trends and changes in climate patterns than RCM Dynamical Downscaling.
3. However, RCM Dynamical Downscaling was better at simulating climate patterns and changes in rainfall. Overall, the results suggest that using Very-fine-resolution GCM has potential for climate simulations, while RCM Dynamical Downscaling is still better for regional rainfall simulations.