A 140km seismic reflection profile across the southern Dabie orogen and the Yangtze foreland reveals the detailed structures of the crust beneath the region. The generally north-depping crustal structures and the gently north-dipping Moho interface with several imbricate segment are referred to as the traces of a northward underthrusting of the Yangtze block. The Moho that underthrusts beneath the Dabie orogen and the south-dipping reflections of southern Dabie create a crossed reflection image, depicting the collisional structure beneath the collision of the Yangtze foreland and Dabie orogen.