Panel A: eddington ratios of three red quasars (0036−0113, 1209−0107, and 1307+2338; red lines) and unobscured type 1 quasars z ~ 0.3 (blue histograms). The gray dashed and dotted lines represent the Eddington ratio distributions for red quasars and unobscured type 1 quasars at z ~ 0.7, respectively, where results are adopted from Kim et al. (2015b). Panel B: the same figure as above, except that unobscured type 1 quasars have bolometric luminosities similar to the two red quasars (0036−0113 and 1307+2338; 45.50 < log(L_bol∕erg s⁻¹) < 45.79).