Lin Yanli's revenge is not a simple killing, but allows the perpetrator to "feel" her despair during her lifetime - the head teacher will dream that she is trapped in the never-ending exam hell, and the mother will see her daughter's figure withering in the mirror day by day...
The scariest thing is never the ghosts, but the human heart. The most suspenseful thing is not the truth, but why we allowed the tragedy to happen.
Intent: When education becomes oppression, when emotions are ignored, how a young life dies step by step, and the voice that is not heard after her death.