fèn​zhàn

fight bravely

奋战 (奮戰) fèn​zhàn
fight bravely verb
to fight courageously or gallantly in a battle or conflict

The soldiers are fighting bravely on the front lines.

struggle verb
to work hard or exert great effort to achieve a goal

All staff are working hard day and night to complete the task.

Frequency

Movie subtitles
1.88 per million appears in 1% of films
Written text
6.51 per million

Sources

Definitions
CC-CEDICT