“…A large and growing body of literature has investigated the concept (Teng et al, 2019;Zhang et al, 2020;Wang and Wei, 2014;Zhang et al, 2021), measurement (Yao et al, 2015;Liu et al, 2016a;Wang et al, 2017;Cai et al, 2019), impact factors (Zhou et al, 2016;Zhang et al, 2017;Yu and Zhang, 2021;Zhang et al, 2018;, and effects (Zhang and Cheng, 2009;Zhang, 2011;Long et al, 2015;Lu et al, 2018;Zhu et al, 2019;Wu and Gu, 2021) of carbon emission efficiency (CEE). The indicators for measuring CEE have shifted from a single factor measurement method (Ang, 1999;Mielnik and Goldemberg, 1999;Pretis and Roser, 2017;Ferreira et al, 2018) to a total factor measurement method (Kortelainen, 2008;Marklund and Samakovlis, 2007).…”