Evolution of the FC in Hα and EUV waves. Panel a: temporal evolution of the normalized AIA 94 Å, 304 Å, and Hα intensities within the black box in panel c. Panel b: ONSET Hα images showing the formation of the filament threads. They are aligned with the AIA images through cross-correlation between the ONSET and HMI white-light images. Panels c and d: AIA 304 Å and corresponding running-difference images. The dashed line represents the filament threads, and the orange arrow points out the transferred filament.