斷後路

Simplified: 断后路

duànhòulù ㄉㄨㄢˋ ㄏㄡˋ ㄌㄨˋ

    • to cut off an enemy's retreat or supply line
    • to leave an opponent no room to back out
    • to burn one's bridges

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
cut off the way back
Meaning
To cut off an enemy's retreat or supply line, or leave an opponent no room to back out. Also 'burn one's bridges'.

Sources