最简单直接的,也是最常用的就是:“Gong Xi Fa Cai” (普通话); 或者 “Kung Hei Fat Choy” (粤语)
很多老外都能明白。如果是写信或者发邮件,还可以在最后加上:
“Wish you a Prosperous/Frutiful Year of the Dragon!” (祝你龙年好运、发大财!)
希望帮到你。
may prosperity be with you !
May you be prosperous!
Congratulations for being fortune
Make a pot of money!
Make a killing!