The Book of Black.

Summary

Zhu Hao Miao, realizing he is in Anhui territory, confronts a husband and wife duo, threatening them with a decayed artifact. Despite their pleas for mercy, he brutally attacks them, revealing the wife as a gluttonous ghost. After a violent confrontation, he captures the gluttonous ghost and uses the powers from the mysterious Book of Darkness to trigger its gluttony, resulting in a snake-like creature emerging from within it, which begins to consume the ghost.

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