I guess that they are Chinese by their round nostrils (only folks to have them) and then I ask.
I USED to go to them for acrylic nails but their work is substandard BECAUSE they do every client in an hour. That just isn't long enough. The nails chip and break within days...and thus one has to go in for "repairs." Their prices are lower for a reason but end up being more expensive with all the repairs and time spent.
The person I have now is SUPER.
However, I agree with your premise of them being hard workers. That they are.
After the takeover in Viet Nam the Viet refugees got out however they could and the Chinese were kicked out by the Communists. When they got to their new countries they understood relationships differently. Even in Viet Nam now the hostility between the two populations has pretty much gone away because in the face of the Communists it became silly.