2. Call friends or parents at ordinary times and try to avoid playing in the dormitory. Because you never know how many secrets your roommate will get from your conversation with others. When you meet some gossip roommates, you say something to your friends that you think only you can understand, and they will rack their brains to infer something from your words. ...
Don't say it when you are hesitant to say it.
There are no secrets between two people in the dormitory. If one person knows your secret, it basically means that it is not far from the whole dormitory.