Overlay of the ALMA 1.4 mm continuum emission (white contours) of G31.41+0.31 on the integrated intensity (moment 0) map (colors) of CH₃CN K = 4 (E_up ∕k_B = 183 K). The line emission has been integrated over the velocity range 92–102 km s⁻¹. The contours are 3, 6, 9, 15, 30, 60, 90, 120, and 165 times 1 σ, which is 0.32 mJy beam⁻¹. The red crosses indicate the positions of the sources detected in the region by Beltrán et al. (2021). The synthesized beam of the 1.4 mm continuum emission (0.′′11 × 0.′′08, PA = − 83°) and CH₃CN K = 4 (0.′′11 × 0.′′08, PA = − 57°) are shown in the lower left and right corner, respectively.