tán​guān​xiāng​qìng

to congratulate each other

弹冠相庆 彈冠相慶 tán​guān​xiāng​qìng
to congratulate each other
Literally to flick dust off one's cap; used to describe people (often in a negative sense) celebrating because one of their group has gained a high position, implying they will all benefit from the connection.

Frequency

Movie subtitles
0.030 per million appears in 0% of films
Written text
0.088 per million

Sources