What should I do if I am laughed at for learning erhu?

First of all, I especially recommend that you take it with you. Unlike high school, college has a skill that will make you stand out.

Don't be surprised. There is everything in the dormitory. It's just your psychological burden, and others won't laugh at you.

If you want to wait for others to rest before practicing, I have to say that you are very eye-opening. In fact, it doesn't matter at other times, as long as you can make sure that your performance is not particularly unpleasant, and I suggest that you pick up two or three good songs that can be used to play in the summer, so you won't be particularly worried! It will be fine when everyone is familiar with it. Don't worry, you shouldn't worry about your skills. You don't need to practice piano many times in the dormitory. Organizers of some activities have their own venues, such as student unions and clubs with their own offices, dance clubs with their own training grounds, and so on. ...

I have met someone who plays erhu before, and the effect is very good.