Thank you everyone. I think I've found the solution.Yesterday we had a dinner party.I asked my roommates and my nextdoor classmates and our opposite room classmates together. When we were talking about something ,I turned to the problem by the way. Then we all discussed it. And the two of my roommates accpeted our surggestion. AND today they did not do it as usual annoying so much people around the dorm.
It was not bad Idid not take the advice given by the friends who read my last blog. I think this would be a comedy instead of a comflict. Now we have cleared the air. I hope the harmony last long.
I have learnt something. When we have problem with our people, we should talk to them in an appropriate way when it is convenient, not let it become a stright comflict. We must be patient