Cosmic SFR density. The measurements for field galaxies and the best-fitting function are shown with dots (blue from UV and red for IR) and a black curve (Madau & Dickinson 2014). We also show the results of different protoclusters including GOODS-N protocluster, COSMOS protocluster and SSA22 (Casey 2016), PCL1002 (Champagne et al. 2021), HS1700+64 and HS1549+19 (Lacaille et al. 2019) with both overall and core estimations (linked by the dashed vertical lines with the same color), SPT2349−56 (Hill et al. 2020), Distant Red Core (DRC, Oteo et al. 2018), SPT0311−58 (Wang et al. 2021), and LH-SBC3 (Zhou et al. 2024b). The SFR density calculated in this work is shown as an red star, based on the volume of a 2 Mpc sphere (core-like) adopted in Dannerbauer et al. (2014). The volumes are also estimated based on group size (∼400 kpc) and the whole ALMA field of view (48 × 120 Mpc³), as shown in upward and downward arrows, respectively.