Mass-metallicity relation for the MQN01 sample. The MQN01 galaxies are shown as blue stars. The best-fit relation with 1σ uncertainties of the total MQN01 sample is shown as a blue line and shaded region. The reference datasets at similar redshifts from Sanders et al. (2021), Li et al. (2023) are included, where the individual galaxies are shown as filled circles and squares, with the best-fit relations shown in lines and shaded regions representing 1σ uncertainties. The individual data points of the sample in Sanders et al. (2021) were extracted using WebPlotDigitizer. The CEERS sample (Shapley et al. 2023a) is shown as green squares, with metallicities calculated using N2, O3, and O3N2 with Bian et al. (2018) calibrations.