bìng​jiān

shoulder to shoulder

并肩 (並肩) bìng​jiān
shoulder to shoulder adverb
working together in close cooperation, unity, or solidarity towards a common goal

The people of the whole country fought side by side and finally overcame the flood.

side by side adverb
standing or moving next to each other in physical proximity; abreast or alongside

They walked side by side along the boulevard.

Frequency

Movie subtitles
4.14 per million appears in 2% of films
Written text
4.32 per million

Sources

Definitions
CC-CEDICT