Projections of the 3D CME and shock in the three perspectives. Top: multipoint running-difference images at ∼21:54 UT. Yellow grids in the three perspectives mark projections of the 3D CME obtained from the MF method. The small white and red plus signs mark the possible peripheries of the CME and the shock, respectively. Bottom: projections of the 3D shock surface reconstructed by the bow-shock model on LASCO/C3 and STEREO/COR2 images. The bottom-middle panel is the base-difference image. The dashed white lines represent the position of the extended bow-shock surface in three perspectives. The red plus signs have the same positions as those in the top panels. Arrows mark the CME, shock, and jet.