Multi-wavelength snapshots with a FOV of ∼240″ × 240″ measured by SDO/AIA at 131 Å (a), 94 Å (b), 193 Å (c), 171 Å (d), 211 Å (e), 1600 Å (f), and 1700 Å (g), and captured by CHASE in passbands of Hα 6562.8 Å (h) and Fe I 6569.2 Å (i), respectively. The gold box outlines the flare region used to integrate the local flare flux. The cyan arrow indicates the targeted coronal loop, which is used to generate the time-distance map. The magenta contours represents the HXR emission at HXI 30–50 keV, and the contour levels are set 30%, 60%, and 90%. The green contours are derived from the Hα radiation measured by CHASE. An animation that shows the evolution of the solar flare and coronal loop is available online.