Soft-band, hard-band, and full-band Chandra images (10″ × 10″) of C1, from left to right. In the right panel, we also plot the ALMA Band 7 continuum contours (in grey) and mark the positions (purple circles) of spectroscopically identified protocluster members. The contours are derived from the reduced ALMA data of Hill et al. (2020), with a beam size of 0.35″ × 0.29″, starting at 5σ with steps of 7σ.