China is a vast country with many dialects. Speaking dialects should also be a folk custom!
They speak the local dialect, which they need when communicating with each other. For foreigners, you should use Mandarin to avoid using local dialects, so that you can understand and misunderstand. ..
Since you are studying in a foreign country, put yourself in the other's shoes. For example, if others come to study in your place, can't you speak the local dialect?
Ah .. I think you lack a sense of belonging, as I did when I was studying, but I can't help it. If people want to go out to study, work and live, they must adapt to the environment ... right?
Unless someone is willing to stay somewhere in his hometown and do nothing all his life, that is another kind!
If you are interested in the local dialect now, learning it is an extra language. Mix with friends and you will get something! !