“…In the process of selecting control variables, this paper reviewed a large amount of relevant literature and finally, based on the research of relevant scholars, selected six indicators, namely, urbanization level, economic development level, tax burden level, capital adequacy ratio, bank net interest margin, and bank provision to loan ratio, as the control variables of this study [ [39] , [40] , [41] ]. The specific measures are as follows: Level of urbanization = urban population/total population; Level of economic development = logarithmic GDP per capita; Level of tax burden = total amount of tax paid by the enterprise/financial resources at the enterprise's disposal; Capital Adequacy Ratio (CAR) = Total Net Capital/Total Risk-Weighted Assets after application of Capital Floor; Bank net interest margin = (bank interest income - bank interest expense)/all interest-earning assets; Bank Provisioning Ratio = Provisioning Balance/Total Loans.…”