Where is the mailroom of the Basic College in Area B of the North Campus of Harbin University of Commerce?

There should be no mail room, and the duty room at the entrance of the college seems to be in charge; If you pick up ems mail, the courier will be notified by the main mailroom in Building 4. Shentong and the like, someone will call to inform; Generally, letters from ordinary post offices seem to go to the lobby on the first floor of the college, and the receiving and dispatching box opposite the ATM. Generally, the keys are in the class.