With the limited filming equipment and time, our idea must be in line with the reality to bring it into full play. We adopted reverse thinking and the detailed plan is as follows: Five still pictures should be filmed, namely staircase, the street of the parking lot, the up take ventilator on the lawn, the toilet and the open space in front of the school gate, among which staircase, the street of the parking lot and the open space in front of the school gate should be filmed with a high angle shot.

There is always a white circle of a body shape, but the body has gone. It is surrounded with a warning line. Although nobody knows when, there must have been an accident before the shooting. It can be witnessed from the pictures that people absolutely ignored at the white circle and lead their normal life as if nothing had happened.

The sound, however, is back to the moment when the accident took place.

Someone was knocked down, someone was shot and someone jumped from a building. Although we could hear the sound of the accident and feel the horror, the images we see are quiet and peaceful. They show the same environment in different times, which gives the audience an interesting experience. No matter on the lawn or in the open space before the school gate, they are what they are now by witnessing speed and movement. But the white body circle is more like an abstract existence. It is like a historical teller, seeing what has happed on the ground. To forget or not to forget?