Paranormal Investigation Bureau Chronicles: Final Season Series (Complete 7 Volumes).

Summary

In a cave, Meng Qi Qi and Zhang Zhi Yan are among a group descending via a rope. Sun Pang Zi distributes shotguns to boost morale. Upon reaching the bottom, they find a cramped space filled with people and discover two large stone doors with a peculiar copper lock shaped like entwined snakes. Sun Pang Zi attempts to unlock it using a tool called "Dragon Whiskers," eventually succeeding. As they push the heavy doors open, a chilling aura emerges, leading to chaos when one of their group members is found dead, mutilated. Tensions rise as they realize the danger lurking within, prompting a swift retreat and urgent actions to address the situation.

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