“…The race to the bottom hypothesis mainly portrays the impact of environmental regulation on firms’ location decisions and business strategies, etc., and argues that the probability of firms’ proximity location shift is greatly increased under the increasingly stringent environmental regulation. At the same time, firms’ business decision-making also changes to adapt to changes in environmental regulation policies [ 46 , 47 , 48 ]. At the macro level, the economic effects of environmental regulation are mainly reflected in the effects on economic growth [ 49 ], industrial structure upgrading [ 50 , 51 ], total factor productivity [ 52 , 53 ], foreign trade, and outward investment attraction [ 54 , 55 , 56 ], etc.…”