(a) Comparison of L_bol values from L_4.6 and those obtained using different estimators. Red circles mean the L_bol values derived from L5100, while blue circles denote those derived from L3000. The dashed line is a line for which the L_bol values are identical. (b) M_BH values measured based on L_4.6 versus those from different methods. Red circles represent the comparison of M_BH values measured using L_4.6 and FWHM_H, compared to those derived from L5100 and FWHM_H. Meanwhile, blue circles denote the M_BH values derived using L_4.6 and FWHM_Mg II, versus those from L3000 and FWHM_Mg II. The dashed line denotes a line for which the M_BH values are identical.