If ASBR contains equipment from both Huawei and C company, all traffic will be routed to Huawei product if the routing is on the basis of AS_SET.
For the routing of converged route, the BGP routing depends on non-AS hop.
During the convergence of BGP routes, add the aggregation item for the route converged, or add AS_SET to the converged route.
AS_SET is the disordered set of AS_Path of all specific routes in convergence.
VRPv5 is one AS hop for one AS_SET. However, the IOS of C company takes the AS number in AS_SET as one hop.