Based on the panel data of 70 large and medium-sized cities in China from 2012 to 2019,this paper used the difference in differences method to investigate the implementation effect of the pilot policy and its regional heterogeneity from the perspective of stabilizing ho...MORE Based on the panel data of 70 large and medium-sized cities in China from 2012 to 2019,this paper used the difference in differences method to investigate the implementation effect of the pilot policy and its regional heterogeneity from the perspective of stabilizing hous...