Before revision:  Do external knowledge spillovers affect the evolution of regional innovations in the long run ? The results show that spatial knowledge spillovers exist, and though the range of knowledge spillover is within 1000 kilometers in China, it pushes up regional innovative activities. Moreover, since developing regions benefit more from external knowledge spillovers than developed regions , it leads to the convergence of regional knowledge growth rate .
After revision:  Do external knowledge spillovers affect the evolution of regional innovations in the long run . We empirically verify the theoretical results through applying spatial statistics and econometric model in the analysis of panel data of 31 regions in China. An accurate estimate of the range of knowledge spillovers is achieved and the convergence of regional knowledge growth rate is found, with clear evidences that developing regions benefit more from external knowledge spillovers than developed regions , it leads to the convergence of regional knowledge growth rate .