Panel (a): statistics of the quenching–environment connection. In each (z, M_*) bin, the deviation between the medians of ﹩{d}_{\mathrm{proj}}^{Q}﹩ and ﹩{d}_{\mathrm{proj}}^{\mathrm{SF},\mathrm{sub}}﹩ is the upper number, while the numbers of the QGs and SFGs are the two lower numbers. We choose the deviation ≥3σ as the threshold of the quenching–environment connection being observed. All such bins are red, while others with the deviation <3σ are cyan. Gray bins cannot be accessed by our current data set. Panel (b): fraction of a population of galaxies within 2 R_Vir of massive halos. Different symbols show different populations. Panel (c): median ﹩{d}_{\mathrm{proj}}/{R}_{\mathrm{Vir}}﹩ of different samples. Panel (d): inferred quenching timescales in two redshift bins. The colors and symbols in Panels (b)–(d) are the same.