This red iron box was named Evil Spirits Atlas by Zhang Ze.
It contains several small arrays, and after adjusting its mechanisms, it can automatically identify ghosts and evil spirits below the Foundation Establishment Stage based on Yin Qi, Earth Vein, and the five elements of feng shui.
This technology was exclusively sponsored by Tang.
According to Tang, he has seen more ghosts than he has farted.
If there are any little ghosts out there that can't be identified with his method, he'd eat his shoe.
As for those ghosts and evil spirits comparable to Golden Core strength.
Tang said they've already developed intelligence, scanning them with a box could easily anger them; if you encounter them, sneak attack if possible, and if you can't handle them, just run and get help.
Once Zhang Ze memorized the knowledge points in the book, he said to Fourth Zhao, "If you're afraid, you can head back first."