I, the Onmyoji, Kill the Supreme Ghost in an Instant at the Beginning

The advent of the 21st century super spectrometer detects ghosts! At this time, the underworld is rampant, and the human power is gradually declining. Humanity has established the Dark Order Administration, but it is quite helpless in the face of powerful evil. Fortunately, He Lantang, the greatest Yin-Yang magician in the Qing Dynasty, traveled through time. All ghosts are child's play in his eyes. Ghost ship, Jiyin bone burial ground, Da Yueshi ruins, concubine's mysterious tomb, corpse family blessed land... All the evil places are revealed one by one. PS: This book has no system. The protagonist is powerful and can single-handedly break the yin and yang. Don't read it if you are not interested!