What does gong xi fa coi mean?

"Gong xi fa cai" (恭喜发财) is a Chinese phrase that means "Congratulations and prosper". It is a common greeting used during Chinese New Year, similar to "Happy New Year" in English.

It literally translates to:

* 恭喜 (gōng xǐ): Congratulations

* 发财 (fā cái): Prosper, make a fortune, become wealthy

So, "gong xi fa cai" expresses wishes for good fortune and prosperity in the coming year.