Both good things and bad things.
I am going to talk about good thing.
Vietnamese people are kind. I use to learn English with Vietnamese teacher who studied in USA. He teach both type of student. First, the students who have no much money (also me). He teach English them for free because he understand poverty as well. Second, the student who have money (such as children of teacher, doctor...). He teach English and thestudents give him money.
Vietnamese are diligent. I have a (female) friend in Vietnam. She told me when she studied in the unniversity. She work and studied. Now she work (full-time job) and study the third language. On her holiday she get home.
Vietnamese are lovely.