摘要：Higher-order topological insulators(HOTIs),with topological corner or hinge states,have emerged as a thriving topic in the field of topological ***,few connections have been found for HOTIs with well-explored first-order topological *** a proposal asserted that a significant bridge can be established between the HOTIs and Z2 topological *** subjected to an inplane Zeeman field,corner states,the signature of the HOTIs,can be induced in a Z2 topological *** Zeeman fields can be produced,for example,by the ferromagnetic proximity effect or magnetic atom doping,which drastically increases the experimental ***,we show that a phononic crystal,designed as a bilayer of coupled acoustic cavities,exactly hosts the kane-mele model with built-in in-plane Zeeman *** helical edge states along the zigzag edges are gapped,and the corner states,localized spatially at the corners of the samples,appear in the *** verifies the Zeeman field induced higher-order *** further demonstrate the intriguing contrast properties of the corner states at the outer and inner corners in a hexagonal ring-shaped sample.