Pardon me, Bro, you shouldn't picked up stuff from gossip forum, there're loads of half-baked crap. Over 70% Cantonese Y chromosome is from Central Plain, North China, Shanghai abt 90%, clustered as Group 1 by Fudan university researchers. The paper is published in Nature, doesn't get any more prestigious.
复旦大学 现代人类学研究中心由文波、李辉 领导的科研组通过对国内17个不同省区的871个抽检者的血样进行基因分析,比较南方和北方人的Y染色体 和线粒体DNA的相同率. 第一组(江苏为代表, 包括上海 )Y染色体的相同率很高(平均0.905,約九成相等),线粒体DNA的相同率也很高(平均0.785,接近0.80,約八成相等) 与北方汉人差异无几。
It is Guangxi that showed more diversity (.60) Not surprising since it's the province that border vietnam. The irony is, these Viet losers always want Guangdong, but not Guangxi. Because Guangxi is relatively backward, LOL.
40% Y doesn't equal to 40% DNA, you need more schooling. Biologically, there's no 100% pure race, any ethnic group with more than 50% dominant is considered pure. East Asians are most homogenous mix.
Vietnamese halogroup cluster more with Khmer people, O2a, same language family too, why don't you claim Cambodian as your own? LOL, it's called Stockholm Syndrome, my friend, after 1000 year of Chinese rule. This is why your family name is Chinese 刘 in spite of your hate towards us, in case you're still clueless about your illness.