Temporal evolution of the magnetic reconnection between Hα fibrils observed by NVST. (a)–(d) Time slices of NVST Hα images along the red, green, pink, and cyan lines AB, CD, EF, and GH in Figures 2(c), (d), (b), and (e), respectively. The green and blue dotted lines outline the motions of fibrils, with the moving speeds denoted by the numbers. The red dashed lines in (a)–(b) mark the reconnection region. The cyan dashed–dotted lines in (a)–(d) separately show the times of Hα images shown in Figures 2(c), (d), (b), and (e). See Section 3.1 for details.