负隅顽抗 fùyú-wánkàng

[fight stubbornly with one’s back to the wall;put up a desperate struggle;resist desperately in a hopeless situation] 负:依靠。隅:山势弯曲险要的地方。指依仗地形险阻顽固抵抗

负隅顽抗,自取灭亡