In other words, there are 7 dormitory buildings in the campus where all freshmen are located, with boys 1234 and girls 567. Among them, the boys' building No.3 and the girls' dormitory No.567 are four-person bedrooms, with the structure of going to bed and getting off the table, being alone and having a balcony.
The allocation of dormitories is decided by professional counselors before the start of school, which depends entirely on luck. After the counselors set aside a row of bedrooms on the floor as professional dormitories, they will arrange to check in according to the registration order. If it happens that your other half is a professional and wants to be in a dormitory with you, it is recommended to sign up together.
Every year, different majors have different dormitories, which means freshmen don't have to ask their predecessors in the same major which building they used to live in, because the place they live here may be different from theirs. It doesn't mean that your major has a good dormitory to live in. All majors are drawn equally.