College students in rural areas will not "talk" when they get home. How do they communicate with their elders at home?

Every time I face such a thing, I feel speechless. How could this happen? Many people think that they will not speak their hometown dialect after staying outside for a year or two. I think it's really a bit exaggerated. If you stay out for ten or eight years, listen to other people's hometown dialect or Mandarin for a long time, and suddenly return to your hometown, and you say you are not used to it or can't speak it, then I can accept it. However, you have only been away from college for four years, and you may go home during winter and summer vacations or large holidays, and you will also contact your parents. How can you not speak your hometown dialect?

In fact, there are many such people. They really have the psychology of worshipping foreign things and obsessing foreign things. When he expected to stay in the countryside for a long time, and then suddenly went to the city, he would think that if I spoke Mandarin, I would think I was a city dweller. But if I speak local dialect to you at this time, it seems that I am a little low-end. Don't argue, there are really many such people, because I am also a child from the countryside. I stayed in the city for many years, but it didn't affect my speaking at home at all.

On the contrary, there are many such people around me. When I go out for a few years, I will speak Mandarin behind my back in my hometown dialect, and I will speak like this when I communicate with my elders. He also said that he didn't know his hometown, how to express it, and how to communicate with his elders. I think it is really funny. In fact, you don't have much time to leave home, and you even talked to your parents by phone when you left. So you don't even understand what your parents say? Since I can understand and communicate with my parents, why can't I communicate with some elders in the village?