Comparison of magnetic field orientations at 1.3 mm and 3.1 mm. Left: Magnetic field segments at 1.3 mm (blue) and 3.1 mm (red). Segments shown every ten pixels. Contours show the 5σ-level dust continuum emission at 1.3 mm. The synthesized beam is shown in the lower left corner. The black rectangle indicates the zoomed region shown in the right panel. Right: Close-up of the central region toward sources A, B, and C. Segments are shown every five pixels. The green rectangle shows the region where the polarization segments at 1.3 mm and 3.1 mm are almost perpendicular.