Mirrored Chamber: Double Kill in the Blizzard

When Lin Xia, a graduate student in the history department, led his club members into the Sauron Castle in the Alps, this 19th-century gear-driven mechanical labyrinth was opening its devouring fangs. A blizzard attack trapped seven people in the completely symmetrical east and west wings, and the first corpse appeared among the gears of the bell tower. It was exactly the same as the architect who died tragically eighty years ago - with torn limbs and yellowing fragments of "Principles of Mechanics" stuffed in his mouth. The architectural drawings show that each door is linked to the central bell tower, but when programmer Cheng Yuan tried to crack the code, the door lock of the west wing library suddenly failed, locking him inside. Through the double-layer bulletproof glass, everyone witnessed the paradox in the mirrored secret room in horror: the moment Cheng Yuan called for help in the east wing corridor, the west wing surveillance camera captured his figure being crushed by hydraulic gears. The more deadly lie came from the corpse: Forensic doctor Su Wen detected rigor mortis delayed by low temperature, proving that the death of the first case occurred earlier than the snowstorm closed the mountain. At this moment, the heating system of the castle suddenly went out of control. In the extreme cold of minus 20 degrees Celsius, the professional backgrounds of historical plagiarists, chemical poisoners, and mechanical transformers all became sharp swords piercing each other. The 72-hour countdown starts, who is controlling this man-eating mechanical maze? When the gears of the clock tower bite again, the double killing in the blizzard officially begins...