I heard the south is friendlier than the north, I'm near Hanoi and just recently broke up with my Vietnamese gf.
Every time we travelled around she said she would hear other Vietnamese whispering that she's a slut and even grab drivers and policeman would comment things like, "So what, you think you're too good for Vietnamese men?
The Vietnamese are also extremely nosy, if you add a bunch of the younger generation, you'll see a lot of girls have totally blank fb profiles outside of some obligatory tet pics or whatever, because they know they are being spied on at all times. My ex gf's friends found out we were dating, and they completely ostracized her. She said they told her things like, "you should be with a Vietnamese man, this foreigner just wants to fuck you and will disappear." I have several friends also say their gf's friends and family have expressed disappointment that they are with a foreigner, because "Vietnamese men are much better" Maybe nationalism has been increasing lately.
Anyways universities opened up again, and when she was invited to a party, she went without telling me, got blackout drunk, and slept with a Vietnamese guy that all her friends had been pushing her to date. She called me the next morning to confess, that she thinks maybe they put something in her drinks, but the damage was done, she she went and put herself in that situation without telling me in the first place. I dumped her and that's the end of it, sucks.
She gave me her virginity though, and hundreds of nudes and sex tapes, she messaged me begging to delete them, but I didn't. She has to live with the knowledge that at any moment I could ruin her life, but I'm not that petty.
Anyways, the north seems like it sucks compared to the south, but I'll try Hanoi in the summer and try to poach another university girl. Pic related, her at the start of her training.