Schematic drawings illustrating the merging process. (a): two chromospheric fibrils (L1 and L2) near a filament rooted in a pair of opposite-polarity magnetic patches with a P and N approach. (b): magnetic reconnection (denoted by a red star) happens. (c): a new fibril F1 formed by the magnetic reconnection moving to the filament. (d): f1 moving northward. Vertical arrows in (c) and (d) denote the moving direction of these fibrils.