弹冠相庆 tán guān xiāng qìng

DEFINITIONS

  1. lit. to flick dust off sb's cap (idiom); to celebrate an official appointment
  2. to congratulate and celebrate (promotion, graduation etc)

CHARACTERS

弹 tán pellet, bullet, shot, shell
冠 guān cap, crown, headgear
相 xiāng mutual, reciprocal, each other
庆 qìng congratulate, celebrate