Fatal Dangerous Realm.

Summary

Summary: Da Chuan, a talented researcher, creates a ghost detector using infrared sensors from a dismantled vacuum robot. The device detects ghost magnetic fields within a 10-meter radius using a 2D screen with two red dots. During testing, they discover a ghost's presence in their apartment building, possibly related to a recently deceased old lady. Later, with Huang Xiao and Xia Meng, they use the detector to track the ghost of a murder victim in a stairwell, preparing to communicate with the spirit using special talismans and incantations.

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