Their hukou is still Hong Kong, but housing and necessities are cheaper in the mainland than in Hong Kong, so people just commute back to Hong Kong for work or retire in the mainland. Mainland hukou is only special for their welfare and access to public schools and universities, but if you already have a nice job, then you don't really need that. Also, Hong Kong schools are better.

CheLeung
OP
1
Overseas Chinese from [USA:doge:]

You mean when the control yuan was chosen by the local gov?

I think the first one is correct. Wuzhou dialect sounds very similar to what is spoken around the Pearl River Delta. A lot of people from the Delta immigrated to Guangxi through river routes, resulting in this phenomenon.

They are fixing that. Permanent residents of Hong Kong that aren't Chinese citizens are getting 5 year visas, more Hongkongers are living in the mainland, and more mainlanders are getting Hong Kong residency.

I won't be surprised if they allow dual hukou system between Shenzhen, Hong Kong, Macau, and Guangdong province.

Move to industry, get an AA degree in math or physics. Reconsider after that.