I don’t want to travel with the people in our dormitory, but we agreed! What can I do to get rid of it?

Just say you found a boyfriend, Prince Charming. The kind of guy who makes you head-over-heels. If you want to go out with him during the summer vacation without hesitation - you can only be cruel and focus on sex over friends. When everyone smiles, they are just pretending to complain. In their hearts, they are envious, jealous, and resentful, but they can’t say anything. You don't lose face at all.

On the other hand, maybe the situation is not as serious as you think, or maybe you are becoming more extreme the more you think about it. I usually communicate with them on the sidelines to understand their true thoughts. If not, you can ask your parents to make special food that is not easy to spoil, seal it and deliver it to them by express delivery. On the one hand, you have also partially fulfilled your promise - is it easy to send goose feathers thousands of miles away? There won't be too much guilt in their hearts; on the other hand, if they don't like it, they can avoid worse developments, lest everyone fall into it together.