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

Summary

In a cave, Wu Lian Huan leads a group exploring a mysterious path lined with transparent crystals. As they descend, Yin Bai, a seemingly lazy dog, surprises everyone by jumping down and transforming into a more alert version of himself. The group discusses the crystals, which Wu Lian Huan explains ward off evil spirits. Tension rises as they encounter a corridor with dark brown flooring that appears deceptively ordinary. Xiao He Shang uses incense to investigate, revealing a corrosive liquid beneath the surface. Wu Lian Huan identifies this as a 'Ghost Pool,' a rare phenomenon known only to his family, emphasizing the dangers they face.

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