Cányú de díjūn fùyú-wánkàng, zuìzhōng bèi quánbù xiāomiè.
The remnant enemy forces put up desperate resistance and were ultimately wiped out.
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From 《孟子·尽心下》: 虎负嵎,莫之敢撄 - a tiger backed into a mountain corner, which no one dares approach. 隅 is the cornered terrain; 负 is to have it at one's back.
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Strongly negative - used about defeated enemies, criminals, holdouts. The implication is that resistance is futile but the subject won't yield.