Integrated intensity maps of CS (2–1), SO (2₃–1₂), H¹³CO⁺ (1–0), and HC₃N (9–8). The velocity ranges for integration are indicated in each subplot, which are selected based on the present velocity components of the overall average spectrum of CS (2–1) line. The 3 mm continuum peaks of clump MM3 and MM2 are indicated as orange crosses. Contour levels start from 1.6 K km s⁻¹ to the peak integrated intensities of the [80, 92] km s⁻¹ range with eight uniform intervals. The peak integrated intensities are 76.4, 29.0, 12.5, 41.9 K km s⁻¹ for CS (2–1), SO (2₃–1₂), H¹³CO⁺ (1–0), and HC₃N (9–8), respectively.