  Thouless charge pumping protocol provides an effective route for realizing
topological particle transport. To date, the first-order and higher-order
topological pumps, exhibiting transitions of edge-bulk-edge and
corner-bulk-corner states, respectively, are observed in a variety of
experimental platforms. Here, we propose a concept of hybrid-order topological
pump, which involves a transition of bulk, edge, and corner states
simultaneously. More specifically, we consider a Kekul\'e-textured graphene
lattice that features a tunable phase parameter. The finite sample of zigzag
boundaries, where the corner configuration is abnormal and inaccessible by
repeating unit cells, hosts topological responses at both the edges and
corners. The former is protected by a nonzero winding number, while the latter
can be explained by a nontrivial vector Chern number. Using our skillful
acoustic experiments, we verify those nontrivial boundary landmarks and
visualize the consequent hybrid-order topological pump process directly. This
work deepens our understanding to higher-order topological phases and broadens
the scope of topological pumps.
