Ah well.... most scholars in the PRC still say that Tai languages are Sino-Tibetan, whereas that view has been abandoned by non PRC scholars about fifty years ago. There are the beginnings of discussion, but I suspect that the Sino-Tibetan status of Tai may actually be an "official" position, like the number of minorities or the classification of the early Chiu 周 as "slave society" so challenging it might lead to trouble.What I am interested to know is about languages of those Baiyue 百越. Were they part of Sino-Tibetan? Goujian the King of Yue is said to have a sword graven with "bird & insect" style of writing, which basically is a form of what we now call 漢字/唐人字. Was that Yue Kingdom really part of 百越 or they (at least the rulers) were from 中原?
Also, some people have used Chinese characters to engrave on objects but might not have spoken Sino-Tibetan languages. 王 I believe is inscribed on all sorts of things. The people who inscribed it might have known it meant "king" but might have used their own words for it. Like reading out "lb" as "pound" or 3 as "three" or "tiga" or "saⁿ". Maybe the description of "bird and insect characters" refers to a Chinese-based characters like Nôm?
There is a song called the 越人歌 "Song of the Man of Oát" supposed to be from the early Spring and Autumn Period, sung by a boatman from Oát (I assume they mean the state at this time) and written down in the Han book Soát oán 說苑. It goes like this:
濫兮抃草濫予昌枑澤予昌州州(飠甚)州州焉乎秦胥胥縵予乎昭澶秦踰滲惿隨河湖。
which is a phonetic rendition into Spring and Autumn Chinese!
The translation is into Classical Chinese is given as:
今夕何夕兮,搴舟中流。 今日何日兮,得與王子同舟。 蒙羞被好兮,不訾詬恥。 心幾煩而不絕兮,得知王子。 山有木兮木有枝,心悅君兮君不知。
I can't find a decent online source, but I know that someone has compared the original and translation and what it would be in "Zhuang" and concluded that it is in some sort of old Tai-Kadai language. I am still a bit dubious about it myself.
百越 was used a bit later than 越, one of the reasons they used to give for calling the 百越 as 越 was that after the state of 越 was destroyed in 479 BC, the rulers all fled to the south and set themselves up as kings and princes along the coast....including the land of Min!
This in one of the best articles I know on the subject of the 百越
http://www.sino-platonic.org/complete/spp017_yue.pdf
in the same series there is one about the scripts...but most of it is conjecture, and it neglects to mention the point that Vietnamese and Thai are unrelated languages, so lumping them all together as Viet is making the same mistake that the Chinese made.
http://www.sino-platonic.org/complete/s ... hu_nom.pdf