【三马同槽】〖sn m tóng cáo〗[scheme to usurp power]

三顾茅庐抗曹操，

马壮龙神懿师昭。

同室操戈篡魏政，

槽背抛粪恩仇报。

指司马懿父子三人将篡夺魏的政权。也指阴谋篡权。Refers sima yi father son trio take usurp wei of regime. also refers conspiracy usurping power.