Photometric redshift and stellar mass distributions for our total 27 OFGs (grey). Among them, five OFGs are identified as LBGs (blue; see Sect. 3.5.1) and seven OFGs meet the criteria of H-dropouts (H > 27 mag & [4.5] < 24 mag) in Wang et al. (2019; red; see Sect. 3.5.2). Top: photometric redshifts of our OFGs (including two sources with spectroscopic redshifts). Bottom: LBGs cover the low stellar mass end and H-dropouts cover the high stellar mass end. Our OFGs have a wide range of stellar masses with log(M_⋆/M_⊙) = 9.4 − 11.1. The median redshift and stellar mass of the OFGs (dashed lines) are z_med = 4.1 and log(M_⋆med/M_⊙) = 10.3, respectively.