Zhao Tiezhu looked at the information carefully.

The data show that in room 404 of the old girls'dormitory of Xiangdu University, there will be falling down almost every six months, and most of the dead are female students. Every student who jumps out of a building and dies stares at death.

Later, the University closed its dormitory and locked its doors. But even so, it failed to prevent the fall. What's even more amazing is that when the fall happened, the lock on the door was intact.

Cameras were installed under the building for this purpose, but every time there was a fall, the camera would have problems. After the...