Studies on the infrastructure investment's impact on China's total factor productivity 并列题名：Studies on the infrastructure investment's impact on China's total factor productivity Impact of financial development on China's total factor productivity Study on the impacts of the internal pay gap on enterprise's total factor productivity Study on the impact of rural infrastructure on agricultural total factor productivity 并列题名：Study on the impacts of the internal pay gap on enterprise's total factor productivity Impacts of artificial intelligence on the total factor productivity 并列题名：Impact of financial development on China's total factor productivity Study on the impact of agricultural farmland transfer on agricultural total factor productivity Research on the effect of environmental regulation on green total factor productivity