“…While there are some studies on CEE, there are three limitations in previous research. First, the study scale was mainly the country (Beltr an-Esteve and Picazo-Tadeo, 2017; Girod et al, 2017;Sakamoto and Managi, 2017;Zhou et al, 2017) or the province (Liu et al, 2016a(Liu et al, , 2016bZhang et al, 2016b;Zhou and Liu, 2016), and few studies have examined the CEE of prefecture-level cities (Yuan et al, 2013). Second, previous studies on the factors that influence CEE mainly focus on market-oriented reforms (Lin and Du, 2015), environmental regulations (Zhao et al, 2015), technology and management factor (Cui and Li, 2015;Qin et al, 2017), while few of them focus on urbanization.…”