Listen to these hainanese songs.

http://www.hainannet.com/hainan_songs/pop_1.html

If there were no chinese characters, I would have thought it is a completely different language and not a dialect of minnan.

The consonants have changed similarly to vietnamese.

'S' changed to 'T'

是 - Ti
心 - Tim
山 - Tua

Thanks for the link! It is so refreshing! Hainanese does sound like Taiwanese indeed.

These folk songs are so good and refreshing to hear :-).

They indeed sounds Minnan, I recognize the sounds immediately as as Minnan or Taiwanese, and when I read the lyrics it all make more sense. They do not sound at all like VNmese. VNmese sounds more like Cantonese. In fact to my ear most of the Chinese southern dialects and VNmese have similarity in sounds due to partly a lot of words retaining the Old/Middle Chinese sounds, and partly becuase their speakers (of Yue speaking origin) influencing on the pronunciation of the Old Chinese sounds.

I don't agree,only Cantonese dialect shares some ' tonal ' with VNmese language because it has 50% plus loanwords from Cantonese.

I think you have it backward,it's modern Cantonese tongue branched out of Middle-Chinese.VNmese not even part of Sino-Tibetan linguistic tree.

什麼 ( English: what ) pronuniciation in both Cantonese & Mandarin sound nearly identical.

What I mean is that hainanese and vietnamese are similar in that both languages have the 'S' consonant (in other chinese languages) becoming 'T' consonant which is very interesting.

eg. 心 - Tim

Hainanese is supposed to be one of the Min dialect. A portion of Hainanese originated from Fujian province.