Chuc Mung Nam Moi!
Or, if you really must, 恭喜發財/ 恭喜发财 - gùng héi faat chōi.
金玉滿堂 = Jīnyùmǎntáng
Today is the fist day of the East and Southeast Asian year. It is the year of the Water Dragon (Lóng) which is very auspicious. Whay would all of you want to have in your little red envelope today?