“…A great number of research has proved the adverse impacts of EPU on real economy (Gu et al, 2021;Li et al, 2020), rm investments (Liu et al, 2020;Suh and Yang, 2021;Zhou et al, 2021), innovation activities (Guan et al, 2021;He et al, 2020), nancial markets (Danisman et al, 2020;Nguyen et al, 2020;Phan et al, 2021), and energy market (Xiao and Wang, 2021;Zhang and Yan, 2020). Based on the close link between economic activities and environmental quality, several authors propose the potential outcomes of EPU on environmental quality (Jiang et al, 2019;Yu et al, 2021). According to Jiang et al (2019), EPU may affect carbon dioxide emissions through three channels.…”