Fang Mo, a teacher in Qingxi Town, was originally a gentle and stable scholar, but due to a strange incident in an ancient tomb, he was involved in a family secret that has lasted for thousands of years——
He is no ordinary gentleman, but the last descendant of the Fang family of Qimen Dunjia. His ancestors pretended to be a "family of tomb robbers", but in fact they were defenders who guarded the bronze coffins of the Warring States Period and suppressed the catastrophe of heaven and earth. A tomb-suppressing tiger talisman, a green lantern, and half of the fragments of music, hide the forbearance and responsibility of three generations of the Fang family: the grandfather faked his death to escape, used his notoriety to cover up the truth, and repaired the formation alone in the dark, just waiting for his bloodline to awaken.
As the ancient tomb collapsed and the evil spirit emerged, Fang Mo was forced to awaken the power of Dunjia. As a teacher, he protected the children in the house and the stability of the town while fighting against the evil and conspiracies hidden in the dark. He and Lin Jin, a descendant of the Lin family, went from enemies to reconciliation, uncovering the deception of a millennium grudge between the two families. They were originally allies guarding the tribulation formation, but due to the greed of the Lin family traitors, they became enemies fighting for generations.
The evil spirits feed on people's hearts and use their shadows to bite people. The mysterious organization Xunzong Pavilion is secretly watching in an attempt to awaken the power of robbery in the bronze coffin and subvert the world. Fang Mo holds the bloodline and remnants of the book, and joins forces with Lin Jin. Based on the century-old popularity of Qingxi Town, he restarts the legendary eternal tribulation formation. Between the sound of books and the mysterious shadows, he practices the ancestral motto of "teaching and guarding the heart, and hiding in armor to guard the world." With a green lamp and a body of righteousness, he protects the stability of the world and ends the thousand-year disaster.
This is a story about protection and reconciliation, the growth path of Mr. Wen Tun's transformation into a robbery keeper, and the ultimate showdown between Qimen Dunjia and the evil spirits of heaven and earth - the green lantern is immortal and the ancient tomb is Changan.