背水の陣 (はいすいのじん): fighting with one's back to the wall; having burnt one's bridges; last stand
背水の陣
fighting with one's back to the wall; having burnt one's bridges; last stand
A general drew his army up with the river at their backs so that retreat was impossible. For deliberately removing your own escape route in order to force the win.
The same saying in Chinese: 背水一战