Kong Hee is popular mixed up of cantonese (partially CHC got it
going too). 
More appropriate hokkien is sin chia khuai lok, again sin ni
khuai lok is adulterate from cantonese.
Anyway Happy New Year and dun think too much until kiong hee
huat tsio.

Happy New Year to you too 
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Yup, I agree that as Hokkien began popularized among different
dialect groups, pronounciations crept into Hokkien and these words
came back to haunt the Hokkiens themselves.
恭 is read as Kong = "公" in
Cantonese as well as Kong = "公"
in Mandarin (hanyu
pinyin=gōng).
However, in Hokkien as well as in Teochew, it is always read as
恭 "Kiong" and not "公" Kong.
We can take reference from our closest language related to Hokkien,
the Hockchews, who also differentiate 恭 "Kyng" ≠ 公
"Kung"
Similar adulterations exists
in 恐怖, Hokkien is 恐 "Kh'iong" Por, however many Hokkiens and non-Hokkiens
nowadays pronounce as 孔 "Kh'ong" por, which I believe is an adulteration
from Hong = "恐=孔" in Cantonese as well
as Kh'ong = "恐=孔" in Mandarin (hanyu pinyin=kǒng).
Similar to Hokkien, Teochews differentiate
between 恐 "Kh'iong" ≠ 孔 "Kh'ong"
The nearest language, Hockchews, also
differentiate 恐
"Kh'yng" ≠ 孔 "Kh'ung"
This 公共 is also commonly mispronounced as
"Kong Kong". The
correct Hokkien pronounciation should be "Kong Kiong".
Also 提供 is also commonly mispronounced as
"Th'e Kong". The correct Hokkien
pronounciation should be "Th'e Kiong"
All stemmed from adulterations from Cantonese as well as
Mandarin.
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It's surprising that Teochews maintain 新正如意 Sin
TsĩãN Dzu Yi as the most common form of New Year
greeting whether in Singapore, Malaysia and Thailand. However in
Singapore and Malaysia, in mass media such as Rediffusion and
Hokkien New Year Songs, 新年快樂 Sin Nĩ Kh'uai
Lok has been adulterated from Cantonese earlier on
and taken over as the more popular greeting. In my family
新年快樂 Sin Nĩ Kh'uai Lok had taken
precedence over 新正快樂 Sin TsĩãN Kh'uai
Lok. This shows
that Hokkien in the process of popularizing itself as the common
language had thinned out it's own
characteristics.
However, Teochew not being the common
language, is able to preserve some of the authentic usages.
But in some other usages, Teochew lost more than Hokkien. I
elaborate in the future.
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恭喜發娋(Tsh'io)? Tsh'io = ①動物發情 ②男性性衝動 ③衣著出衆而體面 ④好色
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I think any language once popularized by the masses, goes
towards pidginization and simplification, isn't it? Singapore
Hokkien carries such many Malay loanwords, many Teochew loanwords,
some Cantonese usage, some Cantonese Pronunciation, some visible
Mandarin structures, and many English mixtures.
I find a similarity to Malay.
In the past, before the Chinese came en-mass to Singapore and
Malaysia, I don't think Malay language has many Hokkien loanwords
and usage as well. Gradually as Malay came to be used as
lingua-franca, the simplified structures that were used by Chinese
came back (backflow) to haunt the Malay language as well. Nowadays
most Malays can understand structures such as Gua Mo
Makan, Lu Mia Kepala,
or Hari Satu/Dua/Tiga... easily and
frequently use them alongside the more formal Saya
Hendak Makan, Kepala Anda,
or Hari Isnin/Selasa/Rabu....
Even whole Chinese words and phrases and whole sentence
structures crept into the Malay dictionary, albeit marked as
(bp) = (bahasa percakapan) =
(colloquaillism), such as in Collins Malay Dictionary pg.
452
under cun (bp) cun-cun : Dia
bertolak cun-cun pada pukul
lima. (He left
at exactly five five-o'clock.)
Any Hokkien would be amazed by
the cun-cun even if don't understand
Malay!