I haven't seen it open in these two years. I heard from my brothers and sisters that once you open the door, a professor dies. Some brothers and sisters also said that there would be children playing games by the door. ...

But several students in our college asked the security guard in the building when they went to investigate. The answer given by the security guard is: because of the special design of the liberal arts building, it is easier to walk to the classroom from the side door, but it takes more steps to enter from the main entrance. Therefore, in order to facilitate everyone and save the cost of setting up security guards at the door, the main entrance of the liberal arts building will not be opened.