"I don't know where brother Hao is going tonight. It's not so righteous. He didn't take us."
233 dormitory, except for Su Hao, there are three other people in it. Saturday is definitely the most leisurely day for college students. It's a leisurely time for all students without going to class or listening in.
generally speaking, if you have a girlfriend, you may go out to open a room. If you don't have a girlfriend, you'll go out to have fun. No college dorm is full on Saturday night.
Su Hao's dorm room is not full, so there is no su Hao!
as for why Mulang didn't go out tonight,...