yī​chàng​yī​hè

to exchange poems

一唱一和 yī​chàng​yī​hè
to exchange poems
(of two people) to write and respond to each other in verse, showing mutual affinity and shared interests
to echo each other
(idiom) to chime in with one another; to act in collusion or support each other's views, often with a negative connotation

Frequency

Movie subtitles
0.120 per million appears in 0% of films
Written text
0.337 per million

Sources