[Oyk]

Huh? Clearly u remain clueless with the word "dialect" which is not applicable between Tamil and Hindi  language.

"恭喜发财" long existed before SG became independent...and unlike the controversy over "Deevapali" vs "Diwali"...the Chinese-origin phrase has become almost a universal festive greetings regardless of who you are during CNY...which incidentally is celebrated regardless of language domain...
So I am curious why do you consider Language topic as "long and tough" when FACT is both Tamil and Chinese language are 2 of 4 official languages since the birth of this Republc ?

Even the new citizens are made aware of this  - Why aren't you ?

Well, I would not want to argue with you about your mother tongue.  I can safely assume that you know what you are talking about when you talk about Tamils and Deepvali as you, a Tamil Singaporean and presumably a Hindu, would be speaking from the actual experience of living as a Hindu Tamil.