Slipping motions of loops in the western leg of the hot channel, from the main positive sunspot to the adjacent positive sunspot (panels a–e) and further from the adjacent positive sunspot toward west (panels f–i). (a) Vertical magnetic field image showing the main positive sunspot and the adjacent positive sunspot (P′₁). (b) 304 Å image with a same field of view as panel a. (c, d) 131 Å images with a same field of view as panel a. In panels a–d, the orange dashed box marks the western footpoint region of the hot channel, and the blue dashed line represents the bright lane along which the bright loops at the 131 Å passband slip. The black arrows mark the footpoints of the slipping bright loops. (e) Time-slice plot of the 131 Å intensity along the blue dashed line in panels c and d. The orange dashed line in it marks the slipping motion of the bright loop footpoint. (f) Vertical magnetic field image showing the main positive polarity (P₁), the adjacent positive polarity (P′₁), and the western positive-polarity faculae. (g–i) 131 Å images with a same field of view as panel f. The orange dashed box in panels f–i is the same as that in panels a–d. The black arrows mark the footpoints of the slipping bright loops.