Final Chapter of the Extraordinary Records of the Civil Investigation Bureau.

Summary

The story revolves around a rescue mission in a Gobi Desert mine shaft where a team encounters mysterious circumstances. Sun De Sheng, a clever researcher, helps the squadron leader manage dangerous marsh gas using a bluff about gas types. A rescue team, including Li Weiwei, experiences strange phenomena underground, with Li hearing phantom voices speaking an unidentified language. The team prepares to investigate the cave after clearing toxic gases, with tension building around the unexplained supernatural elements and potential dangers lurking in the underground environment.

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